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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

Projektový management nezbytných činností nepřidávajících hodnotu

Effenbergerová, Dagmar January 2011 (has links)
No description available.
2

Uma abordagem inovadora para medir a eficiência do ciclo de manufatura por meio de um novo modelo multiobjetivo de análise envoltória de dados / An innovative approach to measuring manufacturing cycle efficiency through a new multiobjective data envelopment analysis model

Ushizima, Carlos Alberto 12 September 2018 (has links)
Submitted by Carlos Alberto Ushizima (caushizima@dglnet.com.br) on 2018-11-08T21:39:33Z No. of bitstreams: 1 Dissertação Carlos A Ushizima.pdf: 3738576 bytes, checksum: 8e4ba3aa41fe88d4ff77e8575bca49bb (MD5) / Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2018-11-12T13:55:31Z (GMT) No. of bitstreams: 1 ushizima_ca_me_guara.pdf: 3738576 bytes, checksum: 8e4ba3aa41fe88d4ff77e8575bca49bb (MD5) / Made available in DSpace on 2018-11-12T13:55:32Z (GMT). No. of bitstreams: 1 ushizima_ca_me_guara.pdf: 3738576 bytes, checksum: 8e4ba3aa41fe88d4ff77e8575bca49bb (MD5) Previous issue date: 2018-09-12 / A estratégia da organização Green e Lean Manufacturing enfatiza a redução de desperdícios, resíduos e seus impactos ambientais, o aumento da eficiência, a melhoria da qualidade e a redução do tempo de ciclo pela eliminação das atividades que não agregam valor. Normalmente, as empresas adotam o indicador Manufacturing Cycle Efficiency para identificar e melhorar seus processos buscando atender aos requisitos da Lean Manufacturing. Este trabalho é classificado como uma pesquisa aplicada, a abordagem do problema é quantitativa e o método utilizado de Modelagem e Simulação, além da técnica não paramétrica da Análise Envoltória de Dados Multi-critério para calcular otimamente um novo indicador denominado Value Added Actcities in Manufacturing Processes (VAAMP) ou Índice de Atividades de Valor Agregado em Processos de Manufatura para medir a eficiência dos processos produtivos por meio de parâmetros da Lean e Green Manufacturing. Uma aplicação em uma indústria multinacional de autopeças foi feita com o objetivo de testar e validar o novo indicador. Como vantagem imediata foi possível aos gestores tratar informações adicionais ao indicador Manufacturing Cycle Efficiency, adotado pela empresa, incorporando outros parâmetros importantes citando como exemplo: a quantidade de sucata, o volume das vendas, a quantidade de peças em processo, os gestores e especialistas em Lean e Green Manufacturing da empresa estudada, que observaram boa adesão à prática dos novos valores calculados, quando comparados aos cálculos tradicionalmente adotados. Outras vantagens deste novo indicador também são destacadas, como o estabelecimento de um ranking de eficiência entre os processos produtivos analisados e a determinação de metas viáveis para tornar eficientes os processos identificados como ineficientes / The strategy of organizational Green & Lean Manufacturing emphasizes on reducing waste and environmental impacts, increasing efficiency, quality improvement, and cycle time reduction by eliminating non-value-added activities. Usually enterprises adopt the indicator Manufacturing Cycle Efficiency to identify and make improvement so as to meet Lean Manufacturing requirements. This work is classified as an applied research, approach of problem is quantitative and based on Modeling and Simulation, in addition to the nonparametric technique the Multi-Criteria Data Envelopment Analysis, to optimally calculate a new indicator, hereby called as Value-Added Activities in Manufacturing Processes, to measure the efficiency of productive processes through Green and Lean Manufacturing parameters. An application of new indicator was made in a multinational auto parts industry with the purpose of validating and testing it. As an immediate advantage of this new indicator, it was possible for managers to insert more information, as incorporating aspects associated with Green Manufacturing, in the calculation of the Manufacturing Cycle Efficiency, making it more consistent and representative of what is happening in practice. Among this additional information on the real processes analyzed, we can mention, for example, the amount of scrap generated, the amount of sales invoicing, the quantity of work in process, the quantity of finished products in stock, among others. The results of a new indicator were validated by specialists in Green & Lean Manufacturing, managers of the studied company, who observed greater adherence to the practice of these new calculated values, when compared to the calculations traditionally adopted. Other a new indicator advantages are also highlighted, such as the establishment of a ranking of efficiency between the productive processes analyzed and the determination of feasible goals to make efficient the processes identified as inefficient
3

Uma abordagem inovadora para medir a eficiência do ciclo de manufatura por meio de um novo modelo multiobjetivo de análise envoltória de dados /

Ushizima, Carlos Alberto January 2018 (has links)
Orientador: Aneirson Francisco da Silva / Resumo: A estratégia da organização Green e Lean Manufacturing enfatiza a redução de desperdícios, resíduos e seus impactos ambientais, o aumento da eficiência, a melhoria da qualidade e a redução do tempo de ciclo pela eliminação das atividades que não agregam valor. Normalmente, as empresas adotam o indicador Manufacturing Cycle Efficiency para identificar e melhorar seus processos buscando atender aos requisitos da Lean Manufacturing. Este trabalho é classificado como uma pesquisa aplicada, a abordagem do problema é quantitativa e o método utilizado de Modelagem e Simulação, além da técnica não paramétrica da Análise Envoltória de Dados Multi-critério para calcular otimamente um novo indicador denominado Value Added Actcities in Manufacturing Processes (VAAMP) ou Índice de Atividades de Valor Agregado em Processos de Manufatura para medir a eficiência dos processos produtivos por meio de parâmetros da Lean e Green Manufacturing. Uma aplicação em uma indústria multinacional de autopeças foi feita com o objetivo de testar e validar o novo indicador. Como vantagem imediata foi possível aos gestores tratar informações adicionais ao indicador Manufacturing Cycle Efficiency, adotado pela empresa, incorporando outros parâmetros importantes citando como exemplo: a quantidade de sucata, o volume das vendas, a quantidade de peças em processo, os gestores e especialistas em Lean e Green Manufacturing da empresa estudada, que observaram boa adesão à prática dos novos valores calculados, quand... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The strategy of organizational Green & Lean Manufacturing emphasizes on reducing waste and environmental impacts, increasing efficiency, quality improvement, and cycle time reduction by eliminating non-value-added activities. Usually enterprises adopt the indicator Manufacturing Cycle Efficiency to identify and make improvement so as to meet Lean Manufacturing requirements. This work is classified as an applied research, approach of problem is quantitative and based on Modeling and Simulation, in addition to the nonparametric technique the Multi-Criteria Data Envelopment Analysis, to optimally calculate a new indicator, hereby called as Value-Added Activities in Manufacturing Processes, to measure the efficiency of productive processes through Green and Lean Manufacturing parameters. An application of new indicator was made in a multinational auto parts industry with the purpose of validating and testing it. As an immediate advantage of this new indicator, it was possible for managers to insert more information, as incorporating aspects associated with Green Manufacturing, in the calculation of the Manufacturing Cycle Efficiency, making it more consistent and representative of what is happening in practice. Among this additional information on the real processes analyzed, we can mention, for example, the amount of scrap generated, the amount of sales invoicing, the quantity of work in process, the quantity of finished products in stock, among others. The results of a new indi... (Complete abstract click electronic access below) / Mestre
4

LOGISTIK OCH TRANSPORT INOM BYGGOMRÅDET I TÄTBEBYGGDA OMRÅDEN / LOGISTIC AND TRANSPORT WITHIN THE CONSTRUCTION SITE IN DENSLEY BUILT-UP AREAS

Andersson, Simon, Johansson, Isac January 2023 (has links)
Introduction - The construction industry has its focus on six areas that manage whathappens in the construction area. These areas are related to the construction of newbuildings and the processes that affect buildings. The goal of the study is to find outhow the use of logistics on a smaller construction site affects transport, material, andinventory management. To later see its impact on production. Method - The study has been conducted as a real-time case study. The studied projectwas in production at the time of investigation. This meant that the company could nothide its shortcomings and the authors increased their chances of discoveringimprovements. In the case study, triangulation between interviews, observations andliterature study was used to answer the questions. Results – The company had a clear plan and planned the construction logistics dailybased on various deliveries and delays and they covered materials if needed. In theinterviews, the location manager mentions the importance of efficient planning andstorage locations, while the sustainability manager emphasizes the concept of "just intime" and the awareness of logistics problems. The project manager focused onavoiding the non-value-added activities and pointed out the importance of carefulplanning and structure to improve efficiency, profitability, and safety. Analyze – Through careful pre-planning and "just in time" deliveries, the companystrives for effective project plans and cost efficiency. By fixing security measures,securing permits in densely built-up areas, and introducing traffic control measures,they strive to improve safety, profitability, and efficiency. Discussion – The study consists of observations, interviews, and literature study. In thediscussion, weaknesses and strengths are discussed with observations and interviews.Discussion is linked back with the theoretical framework, the goal, the questions, andthe delimitations. / Introduktion – Byggbranschens har sitt fokus på sex områden som hanterar det somsker på byggområdet. Dessa områden har anknytning till byggnation av nya byggnaderoch de processer som berör byggnationer. Målet med studien är att ta reda på hurlogistikanvändningen på ett mindre byggområde påverkar transporter, material- ochlagerhanteringen. För att senare se dess påverkan på produktionen. Metod – Studien har utförts som en fallstudie i realtid. Det studerade projektet varunder produktion vid undersökning. Detta gjorde att företaget inte kunde dölja sinabrister och författarna ökade sina chanser att upptäcka förbättringar. I fallstudienanvändes triangulering mellan intervjuer, observationer och litteraturstudie för attbesvara frågeställningarna. Resultat – Företaget hade en tydlig plan och planerade bygglogistiken dagligen baseratpå olika leveranser och förseningar och de täckte material vid behov. I intervjuernanämner platschefen betydelsen av effektiv planering och upplagsplatser medanhållbarhetschefen betonar begreppet ”just in time” och medvetenheten avlogistikproblemen. Projektledaren fokuserade på att undvika de icke-värdeskapandeaktiviteterna och påpekade vikten av noggrann planering och struktur för att förbättraeffektiviteten, lönsamheten och säkerheten. Analys – Genom noggrann förplanering och ”just in time” leveranser strävar företagetefter effektiva projektplaner och kostnadseffektivitet. Genom att fixa säkerhetsåtgärder,säkra tillstånden i tätbebyggda områden och införa trafikkontrollåtgärder strävar deefter att förbättra säkerheten, lönsamheten och effektiviteten. Diskussion – Studien består av observationer, intervjuer och litteraturstudie. Idiskussionen diskuteras svagheter och styrkor med observationer och intervjuer.Diskussion kopplas tillbaka med teoretiskt ramverk, målet, frågeställningarna ochavgränsningarna.
5

Värdeflödesanalys i ett råmaterialflöde : En fallstudie där icke-värdeskapande aktiviteter och dess orsaksfaktorer identifieras

Eriksson, Carl-Oscar, Tornberg, Jesper January 2019 (has links)
Syfte – Studiens syfte är att utifrån en värdeflödesanalys kartlägga ett råmaterialflöde samt identifiera icke-värdeskapande aktiviteter och föreslå förbättringsförslag. För att besvara syftet har det brutits ned i tre följande frågeställningar: Vilka icke-värdeskapande aktiviteter kan identifieras i flödet? Vad finns det för argument till att åtgärda de upptäckta icke- värdeskapande aktiviteterna Hur kan de upptäckta icke-värdeskapande aktiviteterna åtgärdas för att höja effektiviteten? Metod - Den genomförda studien är en fallstudie vilken bygger på en induktiv ansats med kvantitativa inslag. Den använda metoden är av kvalitativ karaktär då studien grundar sig på intervjuer och tolkning utifrån observationer av den grundläggande datainsamlingen. Datainsamlingen har genomförts utifrån litteraturstudier, intervjuer, observationer och dokumentstudier. För att nå en hög trovärdighet har det vid utformning av intervjufrågor varit viktigt att dessa kunnat kopplats till uppfyllnad av syftet. Detta arbete gjordes för att minimera risken för systematiska fel. Resultat – Studiens resultat bygger på en kartläggning av ett flöde där en nulägesanalys genomfördes för att sedan genomföra en värdeflödesanalys. Utifrån värdeflödesanalysen framgick det att en brist i flödet var höga nivåer av slöserier. Det största identifierade slöseriet var bristande kvalité, främst orsakat av produktion av defekta produkter. Denna brist påverkar vidare stora delar av flödet. De åtgärdsförslag vilka läggs fram i studien är att via en förändring av kulturen på företaget, genomföra standarder och vidare jobba med ständiga förbättringar. Implikationer – Resultatet visar vikten av att arbeta med effektivisering av slöserier vilket i studiens fall leder till bristande kvalitet främst i form av produktion av defekta produkter. Studien har ett praktiskt bidrag till tillverkande företag, genom att ta till sig de presenterade åtgärdsförslagen kan det generera en bättre samsyn på kvalitet i verksamheten. Även ett teoretiskt bidrag ges i form av att ämnet ständigt är under utveckling och behöver ny uppdaterad data. Vidare forskning skulle kunna se över hur man rent tekniskt och psykologiskt implementerar en förändring likt denna. Begränsningar – Resultatet kan vara svårt att generalisera eftersom detta är en studie genomförd som en enfallsdesign. Vidare är det även komplext att undersöka och utveckla en studie vilken visar på hur kvalitet är kopplat till företagskultur. / Purpose – The purpose with this study is to map a raw material value flow analysis and identify non-value-creating activities and propound suggestions for improvement. Method – The study is a case study based on an inductive approach with quantitative elements. The used methods is of a qualitative character since the study is based on interviews and interpretation based on observations of the basic data collection. The data collection has been done through literature studies, interviews, observations and document studies. In order to achieve high credibility, it has been important that the design of interview questions can be linked to fulfillment of the purpose. This work was done to minimize the risk of systematic errors. Findings – The study's results are based on a mapping of a flow where a current analysis was carried out to then later end in a value flow analysis. Based on the value flow analysis, it appeared that a shortage in the flow was high levels of waste. The largest identified waste was a lack of quality, mainly due to the production of defective products. This shortcoming also affects large parts of the flow. The measures proposed in the study are to implement standards through a change in the culture of the company, and to continue to work on continuous improvements. Implications – The result, which shows the importance of working with streamlining waste, which in this case leads to a lack of quality, mainly in the form of production of defective products. The study can be seen as a practical contribution to manufacturing companies, by embracing these proposals for action, it should generate a better consensus on the quality of the business. Also a theoretical contribution where further research could look at how to technically and psychologically implement a change like this. Limitations – It can be difficult to generalize the results as this is a study conducted as a one-case design. Furthermore, it is also complex to investigate and develop a study that shows how quality is linked to corporate culture.
6

Effektivare material-och produktionsstyrning för minskad genomloppstid i en process hos ett företag med funktionell layout : En fallstudie på Press Kogyo Sweden AB / Efficient material and production management for reduced throughput time in a process at a manufacturing company with a functional layout

Karlsson, Oscar, Hjalmarsson, Oskar January 2021 (has links)
Bakgrund: Dagens marknader har med tiden tenderat att bli mer globala vilket i sin tur har ökat konkurrensen mellan företag. Detta har inneburit att många industriorganisationer har behövt förändra sig för att vara konkurrenskraftiga på marknaden. Ett koncept som idag genomsyrar många företag är lean vilket bygger på att maximera användandet av sina resurser, eliminera slöserier och skapa en effektivare tillverkning. Genom att arbeta med lean kan företag uppnå snabbare genomloppstider. Syfte: Syftet med studien är att kartlägga Press Kogyos propellerprocess för att kunna identifiera icke-värdeadderande aktiviteter i processen. Vidare kommer studien bidra Press Kogyo med förslag gällande hur en effektivare material- och produktionsstyrning kan reducera genomloppstiden i propellerprocessen. För att studien ska uppnå teoretisk relevans är ytterligare ett syfte med studien att bidra med teori kring hur tillverkande företag, med en funktionell layout, kan reducera de nackdelar som finns med layouten med effektivare material- och produktionsstyrning. Genomförande: Studien har delats upp i tre forskningsfrågor. De två första forskningsfrågorna var specifikt inriktade mot det studerade företaget medan den tredje forskningsfrågan var mer generellt ställd mot tillverkande företag med funktionell layout. Studien har genomförts som en fallstudie och präglats av kvalitativa forskningsmetoder. Empiriska data har samlats in genom intervjuer, observationer samt en fokusgrupp. För första forskningsfrågan skapades processkartor och VSM-kartor. Dessa i samband med diverse intervjuer låg till grund för att identifiera icke-värdeadderande aktiviteter/slöserier i propellerprocessen vilka påverkade genomloppstiden. För forskningsfråga två applicerades teori kring material-och För tillverkande industriföretag kan en reducering av genomloppstid generera diverse fördelar. Några av dessa fördelar är: minskat antal produkter i arbete, bättre kvalité, minskade kostnader, bättre prognoser, ökad flexibilitet samt minskad ledtid gentemot kund. Press Kogyo har under en längre period upplevt en problematik kring en av deras processer. Problematiken har legat i att de inte vetat om vilka icke- värdeadderade aktiviteter som finns i processen samt hur de påverkar genomloppstiden.   produktionsstyrning i syfte att reducera de icke-värdeadderande aktiviteterna/slöserier som identifierats och följaktligen reducera genomloppstider i processen. Gällande forskningsfråga tre genomfördes intervjuer med det studerade företaget och ett annat tillverkande företag med funktionell layout. Författarna ämnade att genom dessa intervjuer besvara hur tillverkande företag med en funktionell layout kan reducera de nackdelar som finns med den layouten med hjälp av effektiv material- och produktionsstyrning. Slutsats: I studien identifierades sju slöserier där väntan ansågs vara det slöseri vilket mest påverkade genomloppstiden i propellerprocessen. För att eliminera alla slöserier och framförallt väntan applicerades teori kring material- och produktionsstyrning med fokus på production activity control (PAC). Den teori vilken användes skapade också en teoretisk modell vilken kan vara en bra grund när företag med funktionell layout vill effektivisera sin planering. Vissa delar av den teoretiska modellen användes också senare i studien där den användes för att reducera de nackdelar vilka kan finnas med en funktionell layout. / Background: Today's markets have over time tended to become more global, which in turn has increased competition between companies. This has meant that many industry organizations have had to change in order to be competitive in the market. A concept that today permeates many companies is the lean practice, which is based on maximizing the use of resources, eliminating waste, and creating more efficient production. By working with lean, companies can achieve faster throughput time. For manufacturing industrial companies, a reduction in throughput time can generate various benefits. Some of these advantages are: reduced number of products in work, better quality, reduced costs, better forecasts, increased flexibility and reduced lead time towards customers.Press Kogyo has for a long period experienced problems with one of their processes. The main problem has been that they do not know what non-value-added activities/waste that can be found in the process and how these activitiesaffect the total throughput time of the process. Purpose: The purpose of the study is to map Press Kogyo's propeller process in order to be able to identify non-value-adding activities in the process. Furthermore, the study will provide Press Kogyo with proposals regarding how more efficient material and production control can reduce the throughput time in the propeller process. In order for the study to achieve theoretical relevance, another purpose of the study is to contribute with theories about how manufacturing companies, with a functional layout, can reduce the disadvantages of the layout with more efficient material and production control. Methodology: The study has been divided into three research questions. The first two research questions were specifically aimed at Press Kogyo, while the third research question was more generally directed at manufacturing companies with a functional layout. The study was conducted as a case study and was characterized by qualitative research methods. Empirical data has been collected through interviews, observations, and a focus group. For the first research question, process maps and VSM maps were created. This together with various interviews created the foundation for identifying non-value-adding activities/waste in the propeller process which affected the throughput time. For research question two, theory of material and production control was applied in order to reduce the non-value-adding activities/waste and consequently reduce throughput time in the process. Regarding research question three, interviews were conducted with Press Kogyo and another manufacturing company with a functional layout. The authors intended to, through these interviews, find answers to how manufacturing companies with a functional layout can reduce the disadvantages of the layout with the help of efficient material and production control. Conclusions: In the study, seven wastes were identified where “wait” was considered to be the waste that affected throughput time the most in the propeller process. To eliminate all waste and specifically the waste “wait”, methods and theories regarding material and production control was applied with a focus on production activity control (PAC). All the different theories that was used also created a theoretical model which can be a good basis for planning when companies with a functional layout want to find ways tostreamline their planning. Some parts of the theoretical model were also used later in the study where it was used to reduce the disadvantages that may exist with a functional layout

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