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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.
61

Software for Manipulating and Embedding Data Interrogation Algorithms Into Integrated Systems

Allen, David W. 20 January 2005 (has links)
In this study a software package for easily creating and embedding structural health monitoring (SHM) data interrogation processes in remote hardware is presented. The software described herein is comprised of two pieces. The first is a client to allow graphical construction of data interrogation processes. The second is node software for remote execution of processes on remote sensing and monitoring hardware. The client software is created around a catalog of data interrogation algorithms compiled over several years of research at Los Alamos National Laboratory known as DIAMOND II. This study also includes encapsulating the DIAMOND II algorithms into independent interchangeable functions and expanding the catalog with work in feature extraction and statistical discrimination. The client software also includes methods for interfacing with the node software over an Internet connection. Once connected, the client software can upload a developed process to the integrated sensing and processing node. The node software has the ability to run the processes and return results. This software creates a distributed SHM network without individual nodes relying on each other or a centralized server to monitor a structure. For the demonstration summarized in this study, the client software is used to create data collection, feature extraction, and statistical modeling processes. Data are collected from monitoring hardware connected to the client by a local area network. A structural health monitoring process is created on the client and uploaded to the node software residing on the monitoring hardware. The node software runs the process and monitors a test structure for induced damage, returning the current structural-state indicator in near real time to the client. Current integrated health monitoring systems rely on processes statically loaded onto the monitoring node before the node is deployed in the field. The primary new contribution of this study is a software paradigm that allows processes to be created remotely and uploaded to the node in a dynamic fashion over the life of the monitoring node without taking the node out of service. / Master of Science
62

Processutveckling i praktiken : En fallstudie om processutvecklingsmetoders användbarhet / Process development in practice : A case study about the usefulness of methods for process development

Johansson, Victor, Rahm, Victor January 2022 (has links)
Bakgrund och problem: Att arbeta processorienterat är viktigt för alla typer av företag för att kunna möta en högre ställd kravbild från kunder och omvärlden. En del av processorienteringen involverar att utveckla och effektivisera affärsprocesser. För att möta behovet av utveckling har en mängd olika metoder tagits fram för hur bolag kan arbeta med detta. Bolaget Atea Logistics AB har identifierat ett problem i en av deras affärsprocesser som inte presterar på önskvärd nivå. Problematiken är kopplat till inköpsprocessen och hanteringen av leveransdata, vilket leder till svårigheter i att fastställa ett säkert ankomstdatum av gods. Detta påverkar flera delar i värdekedjan och det slutliga kundvärdet vilket väcker ett behov av utvecklingsarbete. Trots processutvecklingens ökade vikt menar en del kritiker att metoderna som tagits fram för detta är svårförstådda och saknar en praktisk användbarhet. Eftersom den tidigare forskningen sägs sakna praktisk förankring kring hur metoderna faktiskt kan bidra till bättrade affärsprocesser avser denna studie att testa och utvärdera en av dessa metoder på Ateas problematik för att i slutändan öka den praktiska användbarheten. Syfte: Uppsatsens syfte är att testa en metod för processutveckling på ett problem hos företaget Atea. Därefter ska en utvärdering av metoden genomföras för att bidra med eventuella förbättringsförslag sammanställt i ett ramverk. Vidare syftar även uppsatsen till att presentera rekommendationer till Atea kring hur de kan arbeta för att överbrygga sina upplevda problem i affärsprocessen. Metod: Den generella forskningsstrategi som använts är i huvudsak en kvalitativ fallstudie med en till stor del deduktiv ansats med vissa induktiva inslag. För att läsaren tidigt skulle ges en mer övergriplig bild kring processtänkandets olika delar samlades detta i en teoretisk referensram. Sedermera ämnade den teoretiska insamlingen som legat till grund för arbetet att skapa förståelse för de olika metoder som finns för processutveckling för att vidare kunna testa en av dessa i en praktisk miljö. Insamlingen av empiri har skett genom en särskilt verksamhetsnära forskningsmetod, interventionistisk forskning med hjälp av intervjuer, telefonsamtal, fokusgrupper och workshops. Metoden använder ett mer experimentellt och interagerande sätt för observationer genom att vara en del av forskningsobjektet. En testning av en teoretisk metod gjordes därefter på fallet för att lösa ett praktiskt problem parallellt som en utvärdering av metoden kunde genomföras. Den kunskapsteoretiska ståndpunkt som legat till grund för uppsatsen är empirisk realism för att skapa en ökad förståelse för verkligheten än den som teorin beskriver.  Slutsats: För att besvara uppsatsens frågeställningar var syftet att genomföra en testning av BPR på ett verkligt problem hos Atea. Slutsatserna som kan erhållas utifrån detta är först och främst att i egenskap av praktisk användbarhet så kan det konstateras att metoden som testades i uppsatsen definitivt var praktisk användbar men lämnade utrymme för förbättringspotential. Under uppsatsens gång har det uppenbarat sig en avsaknad av vissa aspekter i metoden. De anpassningar som gjorts av metoden på grund av detta är kopplade till praktiskt förekommande företeelser såsom tid, engagemang och motivation. Vidare ansågs metodens praktiska användbarhet kunna höjas ytterligare genom att förändra metodens ordningsföljd i en del av uppgifterna för att på så vis skapa en mer logisk arbetsprocess. Att säkert kunna konstatera att den praktiska användbarheten faktiskt höjts ställer krav på att en ny testning genomförs med det nya ramverket. Däremot finns det mycket som pekar på att dessa förändringar är ett möjligt steg till en mer praktisk metod med enklare användbarhet för processutveckling. Utvecklingsarbetet mynnade även ut i rekommendationer till Atea, de huvudsakliga förbättringsområdena involverade stärkt kommunikation såväl internt som externt, standardisering av processer, samt en utveckling av automatiseringslösningar. / Background and problem: Working process oriented is important for all types of companies in order to meet the high demands from customers and the outside world. Working process oriented involves developing business processes. To meet the increased need for process development a variety of methods have been made on how companies can work with this. Atea Logistics AB have identified an issue in one of their business processes that does not perform in line with their expectations. The issue is linked to the purchasing process and the handling of delivery dates, which leads to difficulties when determining certain arrival date of the goods. This affects several parts in the value chain as well as the final customer value, which raises a need for development. Despite the increased importance of process development, critics mean that the methods for this is difficult to understand and lacks a practical applicability. Since the previous research misses a practical anchoring on how the methods actually contributes to improved business processes this study aims to test and evaluate one of these methods for process development on Atea’s issue, to hopefully increase the practical usability.  Purpose: The purpose of the study is to conduct a testing of a method for process development on a practical issue within the company Atea. Thereafter an evaluation of the method will be done in order to present any suggestions for improvement and to compile these in a framework. Furthermore, the study also aims to provide recommendations to Atea regarding how they can work in order to overcome their experienced issues within their business process.  Method: The study is mainly a qualitative case study. The approach was deductive with some elements of inductive reasoning. A theoretical frame with key concepts was gathered in order to provide the reader with a comprehensive knowledge of the different parts of process orientation. Furthermore, the purpose of the theoretical sampling was to create an understanding of the different methods that exists for process development in order to conduct a testing of one of these in a practical environment. The empirical sampling has been conducted through a particularly practical approach, interventionist research method. The method uses an experimental and interacting approach to gather empirical observations by being a part of the research object. A testing of a theoretical method for process development were then conducted on the practical case in order to solve the issue in parallel to an evaluation of the method. The philosophy applied is empirical realism which strives to create an increased understanding for the reality beyond what is described in theory.  Conclusion: To be able to answer the question of the essay the purpose was to conduct a testing of the BPR method on a real problem within Atea. The conclusions that can be obtained from this is that the method that was tested was practical and useful but left some room för improvement. During the course of the essay, a lack of some aspects in the method has become apparent. The adjustments that have been made because of this is linked to practical phenomena’s such as time, commitment, and motivation. Furthermore, it was considered that the methods practical use could be increased even further by rearranging the order of some of the key tasks in order to create a more logical work process. To be able to state with certainty that the practical usability has actually been increased, it requires that a new test is conducted with the new framework. However, there are many indications that these changes are a possible step towards a more practical method with simpler usability for process development. The development work also resulted in recommendations to Atea, the main areas for improvement involved strengthened communication both internally and externally, standardization of processes, and the development of automation solutions.
63

Kvalitet och Processutveckling : <em>-Av elektroniskt informationsutbyte (EDI)</em>

Starkhagen, Christian January 2010 (has links)
<p>Syftet med detta examensarbete är att undersöka möjligheterna för utökad kundnytta och kvalitetssäkra implementeringsprocessen av elektroniskt informationsutbyte (EDI). Detta uppnås med kvalitetsutveckling som grund, vilket omfattar processorientering.</p><p>Rapporten inleds med en beskrivning av arbetets syfte och vilka problem som står till grund. Vidare introduceras företaget som uppdragsgivare och relevant teori tas upp, detta för att bilda en referensram inför de metoder som använts för att förbättra processen. Slutligen så presenteras resultaten och en diskussion hålls kring detta, med vidare rekommendationer för fortsatt utveckling.</p><p>EDI processen har visualiserats dels med hjälp av akademiska litteraturer och dels från empiriskt material. Visualiseringen av processen har bildat en översikt av dess brister och problemområden (bland annat tidsfördelningen utmed processen och grunden till låg kvalitetsstandard), vilket har gett möjligheter till effektiva lösningsförslag för vidareutveckling. De främsta verktygen som har använts för visualiseringen är processkartläggning och värdeflödesanalys (VSM). I Rapporten presenteras dessutom ett avsnitt om ledningsstruktur för att underlätta processorientering och en allmän beskrivelse om själva EDI tekniken med avsikt att sprida kunskap.</p><p>Examensarbetet bidrar med processkartor för EDI processen, lösningsförslag för identifierade problemområden och rekommendationer för fortsatt utveckling.</p> / <p>The aim of this master’s thesis is to examine the possibilities of increased customer value and to ensure quality for the implementation process of Electronic Data Interchange (EDI). This will be achieved with quality development as a foundation, which consists of process orientation.</p><p>The report will initially describe the purpose of the master’s thesis and what problems that are the reason behind it. Following is a short description of the company who has requested the job and necessary theories are presented, in order to build a foundation for the upcoming methods that have been used. Finally there will be a presentation of the results and a discussion will be held around the subject, with further recommendations for continued development.</p><p>The EDI process has been visualized partly with the help of academic literature and partly trough empirical data. The visualization has established an overview of the process with its flaws and weaknesses (inter alia the distribution of time throughout the process and reasons for low quality), which enables suggestions for effective solutions. The foremost tools that has been used for this purpose is the process mapping and the Value Stream Mapping (VSM). The report also presents a segment about management structure in order to facilitate the process orientation and a general description about the EDI technology in order to distribute knowledge.</p><p>The master’s thesis contributes with maps for the EDI process, suggested solutions for identified problems and recommendations for continued development.</p>
64

Kvalitet och Processutveckling : -Av elektroniskt informationsutbyte (EDI)

Starkhagen, Christian January 2010 (has links)
Syftet med detta examensarbete är att undersöka möjligheterna för utökad kundnytta och kvalitetssäkra implementeringsprocessen av elektroniskt informationsutbyte (EDI). Detta uppnås med kvalitetsutveckling som grund, vilket omfattar processorientering. Rapporten inleds med en beskrivning av arbetets syfte och vilka problem som står till grund. Vidare introduceras företaget som uppdragsgivare och relevant teori tas upp, detta för att bilda en referensram inför de metoder som använts för att förbättra processen. Slutligen så presenteras resultaten och en diskussion hålls kring detta, med vidare rekommendationer för fortsatt utveckling. EDI processen har visualiserats dels med hjälp av akademiska litteraturer och dels från empiriskt material. Visualiseringen av processen har bildat en översikt av dess brister och problemområden (bland annat tidsfördelningen utmed processen och grunden till låg kvalitetsstandard), vilket har gett möjligheter till effektiva lösningsförslag för vidareutveckling. De främsta verktygen som har använts för visualiseringen är processkartläggning och värdeflödesanalys (VSM). I Rapporten presenteras dessutom ett avsnitt om ledningsstruktur för att underlätta processorientering och en allmän beskrivelse om själva EDI tekniken med avsikt att sprida kunskap. Examensarbetet bidrar med processkartor för EDI processen, lösningsförslag för identifierade problemområden och rekommendationer för fortsatt utveckling. / The aim of this master’s thesis is to examine the possibilities of increased customer value and to ensure quality for the implementation process of Electronic Data Interchange (EDI). This will be achieved with quality development as a foundation, which consists of process orientation. The report will initially describe the purpose of the master’s thesis and what problems that are the reason behind it. Following is a short description of the company who has requested the job and necessary theories are presented, in order to build a foundation for the upcoming methods that have been used. Finally there will be a presentation of the results and a discussion will be held around the subject, with further recommendations for continued development. The EDI process has been visualized partly with the help of academic literature and partly trough empirical data. The visualization has established an overview of the process with its flaws and weaknesses (inter alia the distribution of time throughout the process and reasons for low quality), which enables suggestions for effective solutions. The foremost tools that has been used for this purpose is the process mapping and the Value Stream Mapping (VSM). The report also presents a segment about management structure in order to facilitate the process orientation and a general description about the EDI technology in order to distribute knowledge. The master’s thesis contributes with maps for the EDI process, suggested solutions for identified problems and recommendations for continued development.
65

Improving the product development process with additive manufacturing

Philip, Ragnartz, Staffanson, Axel January 2018 (has links)
The following report consists of a master thesis (30 credits) within product development. The thesis is written by Philip Ragnartz and Axel Staffanson, both studying mechanical engineering at Mälardalens University. Developing new components for a production line is costly and time consuming as they must be made from manual measurements and must go through all the conventional manufacturing (CM) steps. Eventual design mistakes will be discovered after the component have been manufactured and tested. To fix the design a completely new component must be designed and therefore double the overall lead time. The purpose of this thesis is to establish how additive manufacturing (AM) can best be used to minimize the cost and lead time in the development of new components. The study was performed by looking at the current product development process in the automotive industry at a large company, here by referred to as company A. 56 components already manufactured at company A´s own tools department was examined and compared to different AM methods. The aim of this was to get a larger pool of data to get an average on production time and cost and see how this differ to the different AM methods. Additionally, two work holders were more closely examined in a case study. Work holder one is a component in the production line that occasionally must be remanufactured. It was examined if this problem could be solved with a desktop plastic printer to hold up for a production batch. Work holder two was the development of a new component, this was to examine the use of printing the component in an early stage impact the development process. The findings from this study is that AM can today not be used in a cost efficient way in manufacturing or development of simple components. This is due to the cost of a metal 3D-printer is still very high, and the building material even higher. This results in components that gets very expensive to make compared to producing them with CM. For design evaluation to be cost efficient there will have to be a design fault in over 12 % of the newly design components for it to be cost effective to print the design for validation before sending it to be manufactured. There are however a lot bigger potential savings in the lead time. Producing the end product with a metal 3D-printer can cut down the lead time up to 85 %. This is thanks to the fact that the printer will produce the component all in one step and therefore not get stuck in between different manufacturing processes. The same goes for design evaluation with printing the component in plastic to confirm the design and not risk having to wait for the component to be manufactured twice. Despite the facts that it is not cost efficient to use AM there are other factors that play an important role. To know that the designed components will work will create a certainty and allow the development process to continue. In some cases it will also allow the designer to improve the design to function better even if the first design would have worked. As AM is expanding machines and build materials will become cheaper. Eventually it will become cheaper to 3D-print even simple components compared to CM. When this occurs, a company cannot simply buy a 3D-printer and make it profitable. There is a learning curve with AM that will take time for the designers to adapt to. Therefore, it is good to start implementing it as soon as possible as it allows for more intricate designs and require experience to do so.
66

Desenvolvimento de um objeto simulador "Canis Morphic" utilizando impressora 3D para aplicação em dosimetria na área de radioterapia veterinária / Development of a phantom "Canis Morphic" using 3D printer for use in dosimetry in veterinary radiation therapy

VENEZIANI, GLAUCO R. 08 November 2017 (has links)
Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-11-08T16:10:07Z No. of bitstreams: 0 / Made available in DSpace on 2017-11-08T16:10:07Z (GMT). No. of bitstreams: 0 / O aumento na longevidade humana fez surgir uma série de doenças com a idade; em contrapartida o avanço da medicina possibilitou o diagnóstico precoce e o tratamento de várias doenças antes incuráveis. Esse cenário atual estendese também aos animais domésticos (cães e gatos - PETs) que dobraram sua expectativa de vida nas últimas décadas, fato que os humanos demoraram séculos para alcançar. Do mesmo modo que os humanos, esse aumento na longevidade dos animais veio acompanhado de doenças relacionadas com a idade, entre elas o câncer. Uma das terapias utilizadas atualmente no tratamento do câncer é a radioterapia, técnica que utiliza a radiação ionizante para destruir as células tumorais (volume-alvo) com mínimo prejuízo aos tecidos circunvizinhos sadios (órgãos de risco). Essa técnica exige a realização periódica de testes de controle de qualidade, incluindo a dosimetria com a utilização de objetos simuladores equivalentes ao tecido, de modo a verificar a dose de radiação recebida pelo paciente em tratamento e compará-la posteriormente com a dose de radiação calculada pelo sistema de planejamento. A rápida expansão do mercado de impressoras 3D abriu caminho para uma revolução na área da saúde. Atualmente os objetos simuladores por impressão 3D estão sendo usados em planejamentos de Radioterapia para a localização espacial e mapeamento das curvas de isodose, realizando, assim, um planejamento mais personalizado para cada campo de radiação, além da confecção de implantes dentais, customização de próteses e confecção de bólus. Diante do exposto esse trabalho projetou e desenvolveu um objeto simulador chamado de \"Canis Morphic\" utilizando uma impressora 3D e materiais tecido-equivalentes para a realização dos testes de controle de qualidade e otimização das doses na área de Radioterapia em animais (cães). Os resultados obtidos demonstraram-se promissores na área de criação de simuladores por impressão 3D, com materiais de baixo custo, para aplicação no controle de qualidade em Radioterapia veterinária. / Tese (Doutorado em Tecnologia Nuclear) / IPEN/T / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
67

Desenvolvimento de um modelo para dimensionamento da capacidade produtiva de fábricas de combustível nuclear para reatores de pesquisa / Development of a model for dimensioning the production capacity of nuclear fuel factories for research reactors

NEGRO, MIGUEL L.M. 22 November 2017 (has links)
Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-22T17:00:26Z No. of bitstreams: 0 / Made available in DSpace on 2017-11-22T17:00:26Z (GMT). No. of bitstreams: 0 / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / A demanda por combustível nuclear para reatores de pesquisa está aumentando em nível mundial, enquanto várias de suas fábricas têm pequeno volume de produção. Este trabalho estabeleceu um modelo conceitual com duas estratégias para o aumento da capacidade produtiva dessas fábricas. Foram abordadas as fábricas que produzem elementos combustíveis tipo placa carregados com LEU U3Si2-Al, tipicamente usados em reatores nucleares de pesquisa. A primeira estratégia baseia-se na literatura da área de administração da produção e é uma prática frequente nas fábricas em geral. A segunda estratégia aproveita a possibilidade de desmembrar setores produtivos, comum em instalações de produção de combustível nuclear. Ambas as estratégias geraram diferentes cenários de produção, os quais devem ser seguros em relação à criticalidade. Foram coletados dados de uma fábrica real de combustível nuclear para reatores de pesquisa. As duas estratégias foram aplicadas a esses dados com a finalidade de testar o modelo proposto, o que configurou um estudo de caso. A aplicação das estratégias aos dados coletados deu-se por meio de simulação de eventos discretos em computador. Foram criados diversos modelos de simulação para abranger todos os cenários gerados, de forma que o teste indicou um aumento da capacidade produtiva de até 207% sem necessidade de aquisição de novos equipamentos. Os resultados comprovam que o modelo atingiu plenamente o objetivo proposto. Como principal conclusão pode-se apontar a eficácia do modelo proposto, fato que foi validado pelos dados da fábrica. / Tese (Doutorado em Tecnologia Nuclear) / IPEN/T / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP / CNPq:310274/2012-5
68

Desenvolvimento da metodologia de síntese e purificação dos dímeros L-lactídeo e glicolídeo para produção do poli (ácido lático-co-ácido glicólico) para utilização na produção de fontes radioativas / Development of a methodology for the synthesis and purification of the dimers L-lactide and glycolide for the production of poly(lactic acid-co-glycolic acid) for use in the manufacture of radioactive sources

PELEIAS JUNIOR, FERNANDO dos S. 23 November 2017 (has links)
Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-23T12:28:11Z No. of bitstreams: 0 / Made available in DSpace on 2017-11-23T12:28:12Z (GMT). No. of bitstreams: 0 / A Organização Mundial da Saúde (OMS) relata o câncer como uma das principais causas de morte no mundo. O câncer de próstata é o segundo tipo de câncer mais prevalente em homens, com cerca de 1,1 milhão de casos diagnosticados em 2012. Braquiterapia com iodo-125 é uma método de radioterapia que consiste na introdução de sementes com material radioativo no interior do órgão a ser tratado. As sementes de iodo-125 podem ser inseridas soltas ou em cordas poliméricas bioabsorvíveis, mais comumente o poli(ácido lático-co-ácido glicólico) (PLGA). A função do polímero é reduzir a possibilidade de migração das sementes, o que poderia ser prejudicial para órgãos e tecidos saudáveis. De modo a reduzir os custos do tratamento, a síntese dos dímeros L-lactídeo e glicolídeo, para posterior utilização para preparação do PLGA, por meio da polimerização por abertura de anel, é proposta neste trabalho. Adicionalmente, propõe-se a utilização do amino-alcóxido tris(fenolato) de zircônio (IV) como alternativa ao usual octanoato de estanho (SnOct2), uma vez que a toxicidade do estanho permanece como obstáculo na produção do PLGA para aplicações biomédicas. Embora o iniciador de zircônio seja mais lento do que o SnOct2, massas molares relativamente elevadas foram obtidas quando razões monômero/iniciador (M/I) de 1000/1 (24 h), e 5000/1 (48 h) foram utilizadas. Considerando que as unidades glicolila (GA) são mais reativas do que as unidades lactila (LA), tempos longos de reação são necessários para atingir uma razão LA/GA próxima do objetivo do trabalho (85/15). O grau de racemização também depende do iniciador utilizado. As reações de polimerização realizadas com o iniciador de zircônio mostraram um maior grau de racemização, quando comparadas com aquelas realizadas com o SnOct2. Também foi observado um ligeiro aumento na racemização com o tempo. Considerando os resultados obtidos na síntese e purificação dos dímeros, e na síntese do PLGA em condições semelhantes às industriais, foi possível preparar o polímero de alta massa molar com um custo dezenas de vezes inferior ao custo do PLGA no mercado internacional. Os efeitos da radiação gama no PLGA também foram estudados. Doses normalmente aplicadas para esterilizar materiais para aplicações biomédicas foram empregadas: 10, 18, 25 e 50 kGy. A massa molar de todas as amostras irradiadas diminuiu de uma forma proporcional à dose até 56% de perda para 10 kGy e 72% para 50 kGy porém, são menos pronunciadas para doses mais elevadas. Alterações nas propriedades térmicas, tais como temperatura de fusão, temperatura de transição vítrea e a entalpia de cristalização e fusão foram também observadas após a irradiação. / Tese (Doutorado em Tecnologia Nuclear) / IPEN/T / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
69

Learning enablers, learning outcomes, learning paths, and their relationships in organizational learning and change

Haho, P. (Päivi) 28 January 2014 (has links)
Abstract The purpose of this thesis is to examine the role of learning and the constituents of learning in creating process innovations and realizing organizational change. Organizational learning was studied and the data was collected in process development projects, in which process simulations were used as a development method for process innovations and change. The empirical research was carried out mainly in 1988–2001. In this thesis, the results of those studies are reflected on, together with the recent literature related to organizational learning theories in the context of process innovations and management of change. Specifically, the concepts of learning enablers, learning outcomes (intangible/tangible), learning paths, and their relationships are studied. Qualitative longitudinal action research with case studies and abductive reasoning are used as the research methods throughout this thesis. The data consists of 34 cases and 99 process simulations in 12 different industries and varies from large core processes to support processes. The case organizations were mainly Finnish companies with Finns as the majority of participants. One case organization was from Switzerland, and in five cases, multicultural groups participated in the process simulations. In each project, process simulations were used at least once during a change project, in some cases even five to eight times. The data analysis proceeded in an abductive manner throughout the included five articles, and the findings are summarized based on the research questions. The theoretical contribution of this thesis is fourfold. The findings give new understanding 1) about learning enablers, their relationships to each other and influence on learning and process innovations, 2) about the role of intangible and tangible learning outcomes in individual and organizational learning processes and 3) about learning paths in process innovations and related change processes. The thesis also defines 4) a model for effective learning processes in change projects concerning process innovations. The contribution in the practical and managerial context should be applicable field of North and West European commercial organizations. This thesis highlights individual and organizational learning in the creation of process innovations, and it also defines the features of an effective development method for creating and implementing process innovations. / Tiivistelmä Tämän väitöskirjan tarkoituksena on tutkia organisaation oppimisen ja sen eri osatekijöiden roolia prosessi-innovaatioiden luomisessa ja muutoksen aikaansaamisessa organisaatiossa. Organisaation oppimista tutkittiin ja aineisto kerättiin prosessien kehittämisprojekteissa, joissa prosessisimulaatioita käytettiin prosessi-innovaatioiden menetelmänä. Tutkimuksen aineisto kerättiin pääsiassa vuosien 1988–2001 aikana. Tässä väitöskirjassa näitä tuloksia analysoidaan vallitsevien organisaatio-oppimisen teorioiden valossa prosessi-innovaatioiden ja muutoksen johtamisen asiayhteydessä. Erityisesti tutkitaan oppimisen mahdollistajia, oppimisen tuloksia (aineettomia/aineellisia), oppimisen polkuja ja kaikkien näiden keskinäisiä suhteita. Tutkimusmenetelmänä on käytetty laadullista pitkittäistä toimintatutkimusta tapaustutkimuksineen ja abduktiivisine päättelyineen. Aineisto koostuu 34 tapaustutkimuksesta ja 99 prosessisimulaatiosta, jotka toteutettiin 12 eri toimialalla, ja vaihtelevat ydinprosesseista tukiprosesseihin. Suurimmaksi osaksi tapausorganisaatiot olivat suomalaisia yrityksiä, ja yksi tapausorganisaatio oli sveitsiläinen. Projektiryhmät olivat pääasiassa suomalaisia, mutta monikulttuurinen ryhmä osallistui prosessisimulointiin viidessä tapaustutkimuksessa. Jokaisessa projektissa prosessisimulointia käytettiin ainakin kerran muutosprojektin aikana, joissakin tapauksissa jopa viidestä kahdeksaan kertaan. Väitöskirjan viiden artikkelin aineiston analysointi suoritettiin abduktiivisen päättelyn periaattein, ja tutkimuksen tulokset esitetään tutkimuskysymysten mukaisesti. Tutkimuksen teoreettinen tulos kohdistuu neljään osa-alueeseen. Tulokset lisäävät ymmärrystä 1) oppimisen mahdollistajista, niiden suhteesta toisiinsa ja vaikutuksesta oppimiseen ja prosessi-innovaatioihin, 2) aineettomien ja aineellisten oppimistulosten roolista yksilön ja organisaation oppimisprosesseissa, ja 3) prosessi-innovaatioiden ja niihin liittyvien muutosprosessien oppimisen poluista. Tutkimus myös määrittelee 4) prosessi-innovaatioita koskevien muutosprojektien oppimista korostavan mallin. Tutkimuksen tuloksia voitaneen soveltaa Pohjois- ja Länsi-Euroopan yritysmaailmassa. Tutkimus korostaa yksilön ja organisaation oppimisen merkitystä prosessi-innovaatioiden luomisessa ja lisäksi se määrittelee vaikuttavan prosessi-innovaatioiden kehittämisen ja käyttöönoton menetelmän piirteet.
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Rotator assembly at Indexator

Lundström, Jonathan, Hörnberg, Emil January 2017 (has links)
The thesis is concerning rotator assembly at Indexator. A need to increase production has been seen and it can be done by implementing an optimized assembly process. In addition to the assembly process a new design on workstations and new test equipment is needed.The study resulted into three assembly process proposals. The processes were balanced, layouts were produced and Plant simulation was utilized to produce simulation models. Each proposal were analyzed based on cost, performance, ease of implementation, flexibility and worker condition. This resulted in a stationary assembly process being most promising and a 3D simulation model was produced for visualization and better understanding. The stationary assembly process has a capacity for 90 rotators per day, while reducing the amount of workers by one.The layout of the workstations was done based on the assembly process layout and further developed to make the work cell lean and ergonomic. It resulted in three workstations to perform the assembly. The test bench was developed by creating target specifications, establish a test procedure and decide components for the test bench layout. The finished test bench can measure dynamic torque, count particles to ensure cleanliness and is able to run the test unattended. / Examensarbetet handlar om montering av rotatorer på Indexator. Målet är att ta fram en optimerad monteringsprocess som kan implementeras i Indexators fabrik utan svårigheter. Den nya monteringsprocessen kommer kräva en ny design på arbetsstationerna och nya testbänkar.Fyra koncept på monteringsprocessen togs fram, baserat på monteringens behov och målsättning. Efter utvärdering så modifierades de fyra koncepten till tre förslag på monteringsprocesser. Processerna balancerades, layouter utvecklades och simuleringsmodeller producerades för varje process. Varje förslag analyserades baserat på kostnad, prestanda, implementation,flexibilitet och arbetar-förhållande. Resultatet blev en stationär monteringsprocess och en 3Dsimulering gjordes för visualisering och förståelse. Den stationära monteringsprocessen har en kapacitet på 90 rotatorer per dag och reducerar behovet av montörer.Layouten för monteringsstationerna baseras på processens layout och har modifierats för ergonomiska aspekter. Inom monteringsstationerna så utvecklades layouten för att minimera antalet onödiga rörelser för montören. Testriggens design utvecklades genom att analysera de behov som fanns, skapa en kravspecifikation samt utvärdera och besluta om testprocedur, upplägg för testrigg och dess ingående komponenter. Testriggen uppfyller målsättningen som är att kunna mäta dynamiskt vridmoment, räkna partiklar för att säkerställa renhet i rotatorn och kunna utföra testningen självgående för att frigöra montören under testprogrammet.

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