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Uneram, Cecilia. "Bättre och bättre dag för dag : Införande av kvalitetsledningssystem och hållbar förändringsledning i offentlig verksamhet." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-386492.
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Förändringskrafter såsom klimatförändringar, ny teknik, globalisering, demografi och värderingar skapar utmaningar för den kommunala verksamheten i Sverige. Krav på förbättring och effektivisering av offentlig verksamhet ökar ständigt och kvalitetsfokus blir allt viktigare. Offensiv kvalitetsutveckling med principer, arbetssätt och verktyg som hjälper organisationer att ge kundtillfredsställelse i en snabbt föränderlig värld behöver genomföras. Syftet med arbetet har varit att undersöka hur ett kvalitetsledningsarbete i en offentlig förvaltning kan utföras och Samhällsbyggnadsförvaltningen i Kinda kommun i södra Östergötland har varit föremål för fallstudien. I januari 2018 införde kommunen en ny organisation och Samhällsbyggnadsförvaltningen var den förvaltning som genomgick störst förändring då flera förvaltningar slogs samman till en gemensam. När verksamheten drog igång uppdagades brister och behov och det blev tydligt att rutiner som behövdes för den nya organisationen saknades. Det ansågs prioriterat att börja arbetet med att införa ett kvalitetsledningssystem som främjar utveckling inom områdena struktur, kultur och systematik och som dessutom integrerar hållbar utveckling. Uppsatsarbetet inleddes med en teoristudie och skapande av ett teoretiskt ramverk som bygger på en generell förbättringsprocess med input, förändringsprocess och output. Ramverket innehåller bland annat teorier om modellen PESTLE, Maslows behovstrappa, hållbar utveckling, Hörnstensmodellen, Total Quality Management/Offensiv kvalitetsutveckling, transaktionellt och situationsanpassat ledarskap, PAV-modellen, förändringsprocesser enligt Janssen, Lewin, Kotter, med flera samt organisationskultur och lärande organisation. Fallstudien genomfördes med hjälp av intervjuer, observationer, enkät och work-shops. Djupintervjuer genomfördes för att erhålla kunskap om hållbar förändringsledning och teleintervjuer och internetsökningar gav tips om arbetssätt, verktyg och införande. Analysen gjordes genom att resultatet applicerades och sorterades med utgångspunkt från indelningen i det teoretiska ramverket. Resultatet visar att vikten av ett engagerat ledarskap inte nog kan poängteras och behov av att skapa en känsla av angelägenhet, genom att säkerställa en tydlig bild över förbättringsbehov, är stor. Införandet av ett kvalitetsledningssystem är en förändringsprocess där nuläget och förbättringsbehov behöver kartläggas för att därefter ta fram en förändringsstrategi. Verksamheten behöver bestämma sig för vilka principer som ska ingå i deras ledningssystem och vilka arbetssätt och verktyg som ska stödja principerna. Hållbarhetsprinciperna bör integreras i kvalitetsledningssystemet för att säkerställa en hållbar kvalitetsutveckling. Det finns ett värde i att ha en n-stegsmodell att hålla sig till och få stöd av genom förändringsarbetet. En införandemodell föreslås där det inledningsvis handlar om att skapa strukturer och system. För att underlätta benchmarking och kunskapsuppbyggnad är det en fördel att bli medlem i SIQ (Swedish Institute for Quality) och delta i deras nätverk för att få stöd och hjälp. Att skapa en kvalitetskultur tar tid och det krävs uthållighet, ständigt lärande av misstag och ett kontinuerligt förbättringsarbete.<br>Drivers for change like climate change, new technology, globalisation, demographyand values create challenges for public sector and municipalities in Sweden. Demandsfor improvement and making the public sector more efficient increase. Focus onquality becomes more and more important. Total Quality Management (TQM) withvalues, techniques and tools need to be implemented to support organisations withcustomer satisfaction in a fast changing world. The aim of this bachelor thesis is to explore how a quality management system inpublic sector can be designed. The Civil Services Department (Samhällsbyggnadsförvaltningen) in Kinda Municipality in Sweden has been in focus inthis case study. In January 2018 a new organisation was introduced, and the Civil Services Department was the department that was subject to the biggest changes when several departments were merged. When the work started in the new form several deficiencies and needs became apparent and it became clear that the new organisation lacked necessary routines. Introducing TQM became a priority in orderto promote development in structure, culture and systematics as well as integrating sustainable development. The research was initiated by conducting a theory study and creating a theoretical framework based on a general improvement process with input, change process andoutput. The framework contains theories of the PESTLE model, Maslows, sustainable development, The cornerstone model, TQM, transactional and situation based leadership, The PAV-model, change processes according to Janssen, Lewin, Kotter amongst others, as well as culture of organisations and learning organisations. The case study was carried out through interviews, observations, a survey and workshops. In depth interviews were conducted in order to obtain knowledge ofsustainable change management and telephone interviews as well as internet researchsuggested techniques, tools and implementation. The analysis was made by applying the result and sorted based on the theoretical framework. The result from the case study shows that the importance of management commitment cannot be stressed enough. It is necessary to create a sense of urgency by ensuring there is a clear picture of the need for change. The introduction of a quality management system is a change process where the present situation and the need for change need to be mapped out followed by the creation of a change strategy. It is necessary for the organisation to determine which principles to include in its management system and which techniques and tools to use to support the principles.The principles for sustainability should be integrated into the quality management system to ensure a sustainable quality development. There is a value to employ a n-step model for support and guidance throughout the change process. Anintroduction model is suggested in which the initial phase requires the creation ofstructure and systems. Membership in SIQ makes it easier to benchmark and shareknowledge and to participate in their network to receive support and aid. Creating aculture of quality takes time and requires perseverance, constant learning from mistakes and continuous improvement.
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Ljung, Marcus, and Vadin Adam Staf. "Säkerställning av mätprocessers tillförlitlighet : En fallstudie på Volvo Group Trucks Operations." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40906.
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Quality insurance is an important part of a manufacturing company in order to achieve and maintain its competitiveness. To measure how the company’s processes are performing, it is necessary to have reliable measurement data. Reliability of measurement data is naturally a crucial and important factor for a company to deliver the right quality to its customers. Without confidence in the measurement data, there is a potential risk that the customers end up with defective products if the measurement results are misinterpreted. This thesis project has been conducted at Volvo GTO in Skövde at the crankshaft manufacturing department. Volvo GTO wants to understand how well their manufacturing process of crankshaft performs by assigning a capability value. One of the requirements for obtaining a reliable capability value is that the measurement system is reliable. Volvo suspects that they do not have a reliable measuring system for measuring the roundness of bearing surfaces on a crankshaft. To clearly identify the problems of the measurement system, several possible causes of errors were identified and then analyzed deeper. These possible causes have attempted to be disproved and the errors which couldn’t be disproven may be a possible cause of error. The result of this thesis project shows that the company doesn’t meet the requirements to perform reliable measurements with such small tolerances. The main cause of the uncertainty in the measurement process is the external factors, such as the measuring environment. This report also includes recommendations on how the company can eliminate the measurement uncertainties to get a more reliable measurement process.<br>För att ett tillverkande företag ska kunna uppnå och bibehålla sin konkurrenskraft är kvalitetssäkring en viktig del av verksamheten. För att kunna uppmäta hur företagets processer presterar är det nödvändigt att företaget har tillförlitlig mätdata. Tillförlitlighet till mätdata är av naturliga skäl en avgörande och viktig faktor för att ett företag ska leverera rätt kvalitet till sina kunder. Utan tillit till mätdatan finns det en potentiell risk att defekta produkter hamnar hos kunden genom att tolka mätresultatet felaktigt. Detta examensarbete har utförts på Volvo Group Trucks Operations (GTO) i Skövde på vevaxels-avdelningen. Volvo GTO vill förstå hur väl deras tillverkningsprocess av vevaxlar presterar genom ett duglighetstal. Ett av kraven för att få ett pålitligt duglighetstal är att mätsystemet är tillförlitligt. Volvo anser idag att de inte har ett tillförlitligt mätsystem vid rundhetsmätning av vevaxlar. För att tydligare kartlägga de problem som idag finns med mätsystemet så identifierades ett antal felmöjligheter som analyserades djupare. Dessa felmöjligheter har försökts att motbevisas och de som inte har kunnat motbevisas kan vara en möjlig felorsak. Resultatet uppvisar att det finns brister i de grundförutsättningar som krävs för att en tillförlitlig mätning skall kunna utföras. I arbetets gång är det tydligt att det främst är de yttre faktorerna som skapar en osäkerhet i mätprocessen. Rapporten avslutas med en rekommendation kring hur företaget kan eliminera mätosäkerheten för att få en tillförlitligare mätprocess.
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Lind, Elias, and Erik Västerbo. "En arbetsmodell för intervallplanerat underhåll : Planering och kostnadsberäkning för underhållsarbete." Thesis, Högskolan i Gävle, Maskinteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-36346.
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Denna studie har genomförts hos en uppdragsgivare som verkar inom livsmedelsindustrin. Studien genomfördes då en av deras maskiner i produktionslinan har återkommande haverier. Maskinen är det sista steget i paketeringen och kallas för tejpnedtryckare. Den fäster en tejpremsa på förpackningarna för att försegla förpackningen under tillverkningsprocessen samt att konsumenterna kan återförsegla förpackningen vid användning. Maskinens oplanerade stopptid står för 2,4 procent av den totala produktionstiden och ett genomsnittligt avhjälpande underhållsarbete på tejpnedtryckaren tar två timmar. När studien genomfördes fanns det ingen tydlig plan för hur förebyggande underhåll på maskinen skulle utföras för att minska de haverier som inträffar. Syftet med denna studie är att minska den stopptid som uppstår på grund av haverier vid tejpnedtryckaren och målet med denna studie är därför att presentera en arbetsmodell för planering och kostnadsberäkningar av underhållsarbete. För att uppfylla studiens mål och syfte användes olika metoder. Det första som gjordes var att samla in data med hjälp av observationer, intervjuer och uppdragsgivarens databas. Utifrån datainsamlingen skapades det sedan ett Ishikawadiagram som visade vilka felkällor det finns till haverierna. Efter det utfördes en parvis jämförelse mellan felkällorna för att rangordna felen i hur allvarlig konsekvensen av ett haveri är. För att validera rangordningen av felkällorna gjordes en FMEA vid sidan av Ishikawadiagrammet. Efter felkällorna rangordnats beräknades dessa i en Weibullmodell för att få ut ett intervall för förebyggande underhåll. För att se underhållsarbetet ur ett ekonomiskt perspektiv utfördes beräkningar för att se vilken typ av underhållsarbete som ska utföras. Metoderna sammanfattades till en arbetsmodell som kan användas för att utreda och implementera underhåll på utrustning som saknar tillståndsbaserad övervakning. Arbetsmodellen består av en instruktion för hur modellen ska användas och kalkylark för kostnads- och intervallberäkningar. Stegen i modellen är genomförda i denna studie för att säkerställa att det är genomförbart och att det går att applicera på en maskin utan tillståndsbaserad övervakning. Felkällornas haveridatum var tvetydiga då underhållsrapporterna från uppdragsgivaren var mycket bristfälliga och svåra att tyda. Det var inte alltid möjligt att utläsa hur eller vad underhållet var utfört på. Detta medför att trovärdigheten för Ishikawadiagrammets, FMEA:ns och intervallberäkningarnas resultat är låg. FMEA, Ishikawadiagrammet och parvis jämförelse ingår inte i den slutgiltiga arbetsmodellen då de var överflödiga.
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Zobel, Thomas. "Environmental management systems : policy implementation and environmental effects." Doctoral thesis, Luleå, 2005. http://epubl.luth.se/1402-1544/2005/32.
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Lilja, Johan. "Quality practice and customer value: strengthening the ideal linkage/." Licentiate thesis, Luleå : Luleå University of Technology, 2005. http://epubl.luth.se/1402-1757/2005/050.
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Vanhatalo, Erik. "Contributions to the use of designed experiments in continuous processes : a study of blast furnace experiments." Licentiate thesis, Luleå : Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1757/2007/66/.
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Cavallin, Petter, and Joakim Samuelsson. "Geometriska avvikelser på skär, för skärande bearbetning." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-25141.
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The quality of a product is an important factorto establish and preserve a sustainable market- and business position in theglobal business environment. Measuring techniques and quality management has astrong correlation. To ensure the functionality of a product, there are needsto measure the product towards specific limitations. Mathematical modeling is away of visualizing a process capability, and its parameters. Sandvik Coromantin Gimo are producing different types of face milling cutters. The company hasa hypothesis about one of its carbide inserts, and its geometrical specificationlimits. The hypothesis is that different geometrical deviations affect themilling cuts edges in different ways, when it is applied and installed in themilling cutter body. The purpose is to develop a mathematical model, which canshow what changes affects the most, which will lead to less waste in theproduction process, by predicting the actual position of the cut in the millingcutter body. The method is based on relevant literature in the main areas ofmeasuring methods and its techniques and statistics. This theory, incombination with the method, is a profound base in the development of themathematical model, and analysis of the cuts. The geometrical deviations weremeasured by using three different measuring methods. This had to be done in orderto verify the mathematical model and its theoretical output, and then compareit to the actual measured data. The result of the study was the development ofa mathematical model, and the analysis of 4000 individual measurements. Theconclusion of the analysis is that certain geometrical deviations are affectingthe position of the milling cuts edges more than others. By using themathematical model, the simulation output will show a theoretical value of themilling cuts geometry, and make it possible to predict the milling cutsdimensional deviation. The mathematical model is validated, based on three mainfactors. These are Gauge Repeatability and Reproducibility, statisticalevaluation, and the development of the mathematical model itself. There are manyparameters affecting the milling cuts geometry, and the mathematical modelshould not be used as the only source of verifying the cut, but rather as acomplementary tool that makes a qualified prediction.
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Strömberg, Evelina. "Öka kundnöjdheten - minska felaktiga leveranser : En fallstudie över leveranssäkerheten vid ABB Machines i Västerås." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69812.
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Leveranssäkerhet är en avgörande faktor för att tillgodose kunder och deras behov. Det handlar om att rätt produkt levereras i rätt förpackning i rätt tid efter kundens godkännande. ABB Machines i Västerås levererar växelströmsmaskiner till kunder i projektform. Projektformen skapar förutsättningar för stor kundanpassning vilket i sin tur ställer krav på flexibilitet och resurser som kan användas mångsidigt. Hanteringen av utleveransprocessens som ska färdigställa projekten genom att komplettera maskinerna med montage- och sidokollin anses inte vara optimal. Detta har lett till högre omkostnader och flertalet omarbeten för att kunna leverera och tillgodose kunderna och deras behov. Detta examensarbete inom kvalitetsutveckling på Luleå tekniska universitet genomförs med syfte att identifiera vilka faktorer som påverkar leveranssäkerheten och hur utleveransprocessen ska hanteras för att öka leveranssäkerheten. Huvudfokuset är att identifiera hur processen ska hanteras för att förenklas och säkerställas. För att nå dit utvärderas och analyseras utleveransprocessen utifrån de tre teoriområdena; standardisering, visualisering och kvalitetssäkring. Studien genomfördes som en fallstudie på ABB Machines i Västerås. Genom observationer och intervjuer samlas relevant data in för att skapa en bild över hur arbetet går till och vilka problem som uppkommer i processen. Detta för att skapa möjlighet till att identifiera områden med förbättringsmöjligheter. Resultat av studien visar att ABB Machines inte har använt sig av de tre fokusområdena standardisering, visualisering och kvalitetssäkring i lika stor omfattning som det finns möjligheter till. Inom flertalet områden i processen finns möjlighet till både utveckling av redn införda arbetssätt samt implementering av nya sätt att genomföra moment, sprida information samt kvalitetssäkra moment. Rekommendationerna har ett övergripande fokus där flera olika delar av utleveransprocessen behandlas. Rekommendationerna är uppdelade på kort-, medellång-, och långsikt. Denna fördelning genererar enklare rekommendationer som kan implementeras direkt samt rekommendationer med behov av anpassning för att på längre sikt kunna bidra till en förbättring i processen. Enligt den analys som har genomförts av utleveransprocessen är slutsatsen att ABB Machines har möjligheter att förenkla och effektivisera moment i flödet. Det kommer också generera möjligheter till att på ett enklare sätt kunna säkerställa leveranserna till slutkund.
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Backlund, Fredrik. "Reliability-centred maintenance : identification of management and organisational aspects when introducing RCM." Licentiate thesis, Luleå tekniska universitet, Industriell Ekonomi, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26148.
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Increased demands on productivity, quality and cost-efficiency affecting manufacturing trends towards increased complexity and higher degree of process automation. A major break down in such a manufacturing system may generate severe damage on productivity, environment and personnel. Using risk assessment to identify serve risks within a plant, in combination with different maintenance strategies, is one course of action to prioritising maintenance activities needed. A methodology for executing a so-called risk-based maintenance is reliability-centred maintenance, RCM. There are several benefits generated from RCM, for example, improved safety and maintenance cost-effectiveness. Though, several companies have problems to make it work. The problems that occur are many times within management and organisational (M&O) aspects, such as lack of communication and management support. Some M&O aspects of importance when introducing improvement methods as TQM and TPM are similar with the ones valid for RCM. Though, differences seem to depend on the use of RCM in a more technology environment, overshadow the affects M&O aspects really bring about when introducing it. That is probably the main reason why obstacles occur when introducing RCM. A structured step model has been developed, focusing on the preparation and planning activities when introducing RCM.<br><p>Godkänd; 1999; 20070403 (ysko)</p>
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Isaksson, Raine. "Process improvement in a third world organisation : a study from Sub Saharan Africa." Licentiate thesis, Luleå tekniska universitet, Industriell Ekonomi, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25818.
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First World improvement theory has been tested in a Third World organisation. A First World improvement process has been defined as a tool for testing. The objective of this thesis is to answer the research question: How does a Third World environment influence the introduction and application of a First World improvement process? The proposed five-stage improvement process was applied in case studies, which examined the Companywide Process, Cement Packing and Quality Control. The conclusion is that a First World improvement process, with only minor changes, can operate successfully in a Third World environment, provided management is truly committed to the concept of improvement.<br><p>Godkänd; 2001; 20070314 (ysko)</p>
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Thörn, Jonathan. "Test Framework Quality Assurance: Augmenting Agile Processes with Safety Standards." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-48188.
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Quality of embedded systems is often demonstrated by performed tests and guaranteed by the quality of the tools used to perform them. Test automation is important in agile development and test frameworks can be considered mission-critical. Thus, it is important to ensure the quality of tools used for quality assurance.This thesis explores how industries with agile processes can learn from safety-related development with plan-driven processes for increased test framework quality. Safety standards often rely on plan-driven processes, focused on discipline in long term prospects with substantial documentation and extensive upfront plans and designs. Agile approaches instead focus on quick adaptation, where software is evolved, undergoes continuous improvements and is delivered incrementally. A case study was performed as an industry collaboration. A literature study extracted approaches from articles and safety standards. Analysis and processing resulted in candidate solutions, principles and practices iteratively refined for general applicability and the industrial context. Insights on implications and perceived industrial value resulted from a focus group, with qualitative and quantitative data collected through moderated group discussions and complementary activities. Finally, this thesis proposes guidelines intended to be generally applicable, with a suggested augmented agile process of sequential ”mini V-models” inherently controlled by Definition of Dones. A case-specific set of proposed guidelines extends the suggestion while embracing insights from the focus group. Also identified was the importance of perceiving the framework as a tool-chain and not a single tool, where interaction sequences and intermediate results can be identified and utilized for analysis and applicable measures. Future work could refine the proposed guidelines with an industrial dynamic validation, and also extend the literature study and expand the focus group for diverse contexts and industrial perspectives.
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Ravald, Emma. "Kundperspektivet vid Barnahus : En fallstudie om återkoppling till barn i brottsutredningar." Thesis, Mittuniversitetet, Institutionen för kvalitets- och maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-40214.
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Vid Barnahus utreds brott där barn misstänks ha blivit utsatta för övergrepp. Barnahus-tanken är samla och samordna aktörer från olika myndigheter under ett och samma tak så att barnet ska slippa att bollas runt mellan myndigheter. Barnet ska skyddas i rättsprocessen genom att brottsutredningsprocessen anpassas till barnet. Tidigare utvärderingar har visat att Barnahus förbättrar bemötandet av barnet, men det har inte visat på bättre resultat för brottsutredningarna, det vill säga att fler brott klaras upp. Det har också framkommit att det finns brister i information till barn och att barn inte får återkoppling om att en brottsutredning som de har varit en del av har lagts ned.Syftet med uppsatsen är att undersöka hur kundperspektivet syns i brottsutredningsprocessen för att kunna förbättra rutinerna för återkoppling till barn.En kvalitativ studie har genomförts genom att intervjua olika kategorier av yrkesverksamma vid ett specifikt Barnahus. Empirin har analyserats utifrån ett kundperspektiv med hjälp av sju framtagna kriterier för kundorientering.Resultatet visar att det saknas rutiner kring återkoppling till barn om att en brottsutredning har lagts ned och att det intervjuade har olika uppfattning om hur den i praktiken sker. Barn riskerar att inte få någon återkoppling alls, särskilt små barn. Riktlinjer och rutiner behöver förbättras och återkopplingen bättre anpassas efter barnens individuella förutsättningar. Kundperspektivet syns i början av brottsutredningsprocessen, inför och vid förhöret med barnet. I slutet av processen är det mindre synligt. Det är också i den delen av processen där återkopplingen till barn förväntas ske. Studiens resultat kan bidra till en ökad kundorientering vid det undersökta Barnahuset, men även användas vid andra Barnahus.<br>At Barnahus investigations about child abuse are being conducted. The idea of Barnahus is to gather and coordinate actors from different authorities under the same roof so that children will not be passed around between the authorities. With crime investigations adopted to the child, the child should be protected within the justice process. Earlier evaluations have shown that because of Barnahus the treatment of the child is better than before, but the crime investigations do not show better results, namely more crimes are not being solved. Lack of information has also emerged and that children sometimes do not get feedback about a disused investigation concerning them.The purpose of this essay is to investigate how customer orientation is visible in the crime investigation process in order to improve the routines for feedback to children.A qualitative study has been conducted through interviews with different categories of professional actors at a specific Barnahus. The empirical findings have been analysed from a customer perspective with the support of seven different criterion for customer orientation.The results show that there is a lack of routines for feedback to give children about disused crime investigation and that the interviewees have different views about how feedback in practice is conducted. Children risk not to get any feedback; this is especially so for younger children. Guidelines and routines need to improve and feedback need to be better adapted to individual conditions. The customer perspective is visible in the beginning of the crime investigation process, before and during the hearing with the child. In the end of the process it is less visible. It is the same part of the process where feedback to the child is expected to be conducted. The result of the study can contribute to increased customer orientation at the Barnahus that is subject for the study, but also to Barnahus in general.<br><p>2020-06-26</p>
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Sebaa, Nadine. "Strävar ni efter bättre idéer och ökadmotivation till förbättringsarbetet : Då kan en medarbetardriven processkartläggning vara det rättaverktyget för er!" Thesis, Mittuniversitetet, Avdelningen för kvalitets- och maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-40269.
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Syftet med denna studie var att öka förståelsen för hur en"Medarbetardriven processkartläggning" skulle kunna användas som ettverktyg i förbättringsarbete genom att stimulera till fler förbättringsförslagsamt öka motivationen till förbättringsarbete. Utgångspunkt för studienhar grundats i författarens intresse för processkartor samt antagandet omatt en processkartläggning inte genomförs av medarbetarna iorganisationen utan av människor med kompetens om hur enprocesskartläggning går till.För att besvara studiens syfte användes en experimentell studiedesignsom inkluderade åtta studiedeltagarna som delades upp i två grupper,Grupp A och Grupp B. Innan studien startade fick studiedeltagarna skattasin egen motivation till förbättringsförslag och förbättringsarbete genomen enkät. Studiedeltagarna i Grupp A genomförde sedan en"Medarbetardriven processkartläggning" och Grupp B fick göra en"Analys av en skapad processkarta". Under tiden som studiedeltagarnagenomförde uppgiften uppmanades de att tänka ut nyaförbättringsförslag. Efter studien fick studiedeltagarna åter besvaraenkäten som utvärderade motivationen, detta för att se om motivationenpåverkats efter studien. Resultatet visade att en Medarbetardrivenprocesskartläggning ökade motivationen till förbättringsarbete samtgenererar i fler-, bättre och mer kreativa förbättringsförslag, detta ijämförelse med en "Analys av en processkarta".<br>The purpose of this study was to increase the understanding of how an"Employee-driven process mapping" could be used as a tool inimprovement work by stimulating more improvement suggestions andincreasing motivation for improvement work. The study was based on theauthor's interest in process mapping and the assumption that a processmapping is not carried out by the employees in the organization but bypeople with skills in how a process mapping is done.To answer the purpose of the study, an experimental study design wasused that included eight study participants who were divided into twogroups, Group A and Group B. Before the study started, the studyparticipants had to estimate their own motivation for improvementproposals and improvement work through a questionnaire. The studyparticipants in Group A then completed an "Employee-driven processmapping" and Group B had to do an "Analysis of a created process map".As the study participants completed the task, they were invited to devisenew improvement proposals. After the study, the study participants wereagain asked to answer the questionnaire that evaluated the motivation,to see if the motivation was affected after the study. The result showedthat an Employee-driven process mapping increased the motivation forimprovement work and generates in more, better and more creativeimprovement proposals, this in comparison with an "Analysis of a processmap".<br><p>2020-06-26</p>
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Khodadad, Davood. "Combined Digital Holography and Speckle Correlation for Rapid Shape Evaluation." Licentiate thesis, Luleå University of Technology, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-55813.
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In manufacturing industry there is a high demand for on line quality control to minimize the risk of incorrectly produced objects. Conventional contact measurement methods are usually slow and invasive, meaning that they cannot be used for soft materials and for complex shapes without influencing thecontrolled parts. In contrast, interferometry and digital holography in combination with computers become faster, more reliable and highly accurate as an alternative non-contact technique for industrial shape evaluation. In digital holography, access to the complex wave field and the possibility tonumerically reconstruct holograms in different planes introduce a new degree of flexibility to optical metrology. With digital holography high resolution and precise three dimensional (3D) images of the manufactured parts can be generated. This technique can also be used to capture data in a single exposure,which is important when doing measurements in a disturbed environment.The aim of this thesis is to perform online process control of free-form manufactured objects by measuring the shape and compare it to the CAD-model. To do this, a new technique to measure surface gradients and shape based on single-shot dual wavelength digital holography and image correlation of speckle displacements is demonstrated. Based on an analytical relation between phase gradients and speckle displacements it is shown that an object is retrieved uniquely to shape and position without the unwrapping problems that usually appear in dual wavelength holography. The method is firstdemonstrated using continues wave laser light from two temperature controlled laser diodes operating at 640 nm. Further a specially designed dual core diode pumped fiber laser that produces pulsed light with wavelengths close to 1030 nm is used. One significant problem when using the dual wavelength single-shot approach is that phase ambiguities are built in to the system that needs to be corrected. An automatic calibration scheme is therefore required. The intrinsic flexibility of digital holography gives a possibility to compensate these aberrations and to remove errors, fully numerically without mechanical movements. In this thesis I present a calibration method which allows single-shot online shape evaluation in a disturbed environment. It is shown that phase maps and speckle displacements can be recovered free of chromatic aberrations. This is the first time that a single-shot dual wavelength calibration is reported by defining a criteria to make an automatic procedure.By the results of the presented work, it is experimentally verified that the single-shot dual wavelength digital holography and numerically generated speckle images can be used together with digital speckle correlation to retrieve and evaluate the object shape. The proposed method is also robust to large phasegradients and large movements within the intensity patterns. The advantage of the approach is that, using speckle displacements, the shape measurement can be done even though the synthetic wavelength is out of the dynamic range of the height variation of the object.
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Bäckström, Ingela. "Quality management for sustainable health: methodologies, values and practices taken from Swedish organizations." Licentiate thesis, Luleå tekniska universitet, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26632.
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In many Western countries today, not least in Sweden, there are a lot of organizations that have great problems with sickness absence. The costs connected to the high rates of sickness absence have also risen to alarming levels. Healthy co-workers and healthy organizations are obvious goals for many leaders, but this is not always so easy to establish. Work practices and leadership that are beneficial to co-worker health are thus vital to identify. Studies have shown relationships between company-wide implementation of quality programs and improved co-worker satisfaction along with low co-worker turn over; in other words, co-worker health along with improved customer satisfaction and financial results. Despite the great problems concerning sickness absence, there are organizations that have been awarded prizes for excellence in leadership, internal partnership, working environment, and profitability. The overall purposes of the research described in this thesis are to examine and describe how management and leadership can establish sustainable health among the co-workers and examine how the leadership for sustainable health is related to Quality Management. The in-depth purpose is to examine which aspects within the values derived from the quality movement are those that primarily influence the co-workers' perceived health. The results presented can be described in three parts and are results from four case studies carried out in five different organizations. Three of the organizations have received awards for establishing good working environment, good financial results, and low sick leaves among their co- workers; the fourth received an award for the successful implementation of quality programs. The first part consists of results from case studies in three different organizations and describes how organizations can work to achieve sustainable health among their co-workers, with practical examples. The results are methodologies, values and organizational structure, which it is considered possible for other organizations to adopt in their efforts to achieve good working conditions resulting in fewer sick leaves. The second part is an attempt to investigate if leadership for sustainable health is related to Quality Management. Methodologies, leadership values, organizational structure, and general values found in organizations which have achieved sustainable health are analyzed in the light of Deming's 14 points, and a correlation is indicated. There is also correlation found between the TQM values and the co-workers' perception of their health. The third part examines which of the aspects within the values grown from the quality movement are those that influence the co-workers perceived health. The results show significant correlation between the values and the co-workers' perception of their health. Aspects found within the value "Top management commitment" were named; Empathy, Presence and Communication, Integrity, and Continuity. Within the value "Let everybody be committed" the aspects; Development, Influence and Being informed were found. These aspects are described in more detail and also in one model per value. The result implies that the TQM values; "Top management commitment", "Improve continuously" "Let everybody be Committed" and "Focus on customers" are important for achieving healthy organizations and sustainable health among co-workers.<br><p>Godkänd; 2006; 20061206 (pafi)</p>
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Wikberg, Lars. "Estimating win-win potential between supplier and customer : a model applied within civil jet engine maintenance." Licentiate thesis, Luleå tekniska universitet, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17651.
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Organisations around the world are today looking for new approaches to maintain or develop competitive advantages, reduce costs, free-up capital and improve quality and service. The traditional customer-supplier relation is characterised by the parties focusing on their own cost reduction, creating win-loose scenarios. Companies today are starting to develop their customer-supplier relations towards more relation-focused approaches. The systems approach is a basis for creating win-win relations between the system components. A win-win relation is looked upon in this thesis as the mutual efforts by customer and supplier in finding and reducing the effect of factors that are causing costs and losses for both customer and supplier. The thesis describes a suggested model for estimating win-win potential for supplier and customer in a maintenance contract regarding civil jet engines. The model is defined as consisting of core values, techniques, and tools for estimating win-win potential. The model is applied in supplier and customer scenario. Findings from applying the model indicate that the supplier's maintenance support performance was a parameter affecting loss factors for both supplier and customer. Investigation pointed out the maintenance supplier's organisation, the supplier's maintenance capacity, and the supplier's spare part inventory as the major causes for problems with maintenance support performance.<br><p>Godkänd; 2001; 20070313 (ysko)</p>
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Lycke, Liselott. "Implementing total productive maintenance : driving forces and obstacles." Licentiate thesis, Luleå tekniska universitet, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18583.
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The global marketplace is highly competitive and organisations who want to survive long-term, have to continuously improve, change and adapt in response to market demands. Improvements in a company's performance should focus on cost cutting, increasing productivity levels, quality and guaranteeing deliveries in order to satisfy customers. Total Productive Maintenance (TPM) is one method, which can be used to achieve these goals. TPM is an approach to equipment management that involves employees from both production and maintenance departments. Its purpose is to eliminate major production losses by introducing a program of continuous and systematic improvements to production equipment. TPM should be developed and expanded to embrace the whole organisation and all employees should be involved in the process as members of improvement teams. This thesis describes the development of TPM and the TPM implementation process. Research is focused on the implementation process of TPM. The author has had the opportunity of both monitoring and steering a company through part of its TPM implementation program and has conducted a longitudinal study. The implementation process takes several years and this thesis focuses on the initial three years of the process. This study demonstrates that driving forces, obstacles and difficulties often are dependent on the organisation, its managers and the individual employees. It also shows that the TPM implementation process has many similarities to the implementation of other improvement concepts. The analysis of these findings forms the basis for recommendations and guidance for organisations, who intend to implement TPM.<br><p>Godkänd; 2000; 20070318 (ysko)</p>
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Eriksson, Henrik. "Benefits from TQM for organisational performance." Licentiate thesis, Luleå tekniska universitet, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18776.
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Total Quality Management (TQM) is sometimes considered as a management system in continuous change and consisting of values, methodologies and tools, the aim of which is to increase external and internal customer satisfaction with a reduced amount of resources. Whether TQM improves the performance of companies has been discussed for several years. One way to work with TQM and its values, methodologies and tools is to apply for and work with a quality award. Today, there are international, national, regional, branch-wise and in-company quality awards. The purpose of this thesis is to evaluate whether and describe how working with quality awards affects the performance of companies. The thesis consists of an extended summary and three appended papers on this subject, each one with a different aim and methodology. Two of the papers study the benefits from in-company quality awards for the performance of units, and one paper studies the financial performance of quality award recipients compared with competitors and branch indices. The main conclusion of the thesis, which strengthens earlier published results, is that working with quality awards affects financial performance positively if companies successfully implement TQM, which is the case for quality award recipients. Moreover, the results of this thesis have not been able to show strong evidence proving that the performance of units which have worked with in-company quality awards, but have not yet successfully implemented TQM, are affected by this work. However, such units experience that working with in-company quality awards has positive effects on the customers as well as the employees.<br>Godkänd; 2002; 20070222 (ysko)
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Westberg, Ulf. "Applications of the PEXE-concept for maintenance policies and proportional hazards models." Licentiate thesis, Luleå tekniska universitet, 1994. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17974.
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Deleryd, Mats. "Process capability studies in theory and practice." Licentiate thesis, Luleå tekniska universitet, 1996. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18688.
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The existence of variation has been a major problem within industry since the early days of the industrial revolution and perhaps even earlier. The fact that two parts not ever will be identical, forces every organisation to find a strategy for how to master variation. Process capability studies, a method designed to judge whether a process is capable or not, often plays an important part in such a strategy.The concept of process capability studies has received both positive and negative criticism during the last decade. For instance, the supporters of process capability studies emphasise the importance of using the method to identify improvement priorities to be focused in the overall improvement process within an organisation.However, as all methods, process capability studies has its limitations. Actually, it is not principally the method as such that has been criticised, but rather the measures of capability used when conducting process capability studies, the so called process capability indices. All existing process capability indices have some weaknesses, even the most sophisticated indices have relatively poor statistical properties which might lead the user to make incorrect decisions, even if most theoretical aspects of how to conduct process capability studies are known by the user. The use of process capability indices is for instance partly based on the assumption that the process output is normally distributed, a condition that is often not fulfilled in practice, where it is common that the process output is more or less skewed.This thesis focuses on process capability studies in both theory and practice. In part 1 of the thesis some theoretical aspects of how to conduct process capability studies are identified and then the adherence to these aspects within Swedish industry is investigated. This study reveals that there are certain gaps between how process capability studies are supposed to be conducted according to theory and the way they actually are carried out in practice. The study also tries to explain why these gaps exist, by analysing common obstacles when implementing and conducting process capability studies.In part 2, a simulation study focusing on the effects of skewness on estimates of some process capability indices belonging to the family of indices named Cis presented. The effects of skewness are studied in three different cases, one incapable case, one case just capable and one very capable case. In all cases, four lognormal distributions with different skewness are used. The results from the simulation study indicate that the effect of skewness is relatively systematic, and therefore there are some hope that future investigations might use these results when formulating some practical solution to the problem of how to use process capability indices when the process monitored has a skewly distributed output.Finally, the results are summarised and discussed and some suggestions for future research are given.
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Dahlin, Gunnar. "Process Maturity : A Component of Process Management." Licentiate thesis, Luleå tekniska universitet, Industriell Ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-62274.
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To be able to meet an increased competition through for instance globalization, and shorter product lifecycles, focus on performance control is central for organizations, where for instance processes and stakeholder orientation are central when continuously improving the operation of the organization. The purpose of this thesis is to contribute to the knowledge of how process maturity can be linked to process management. The following research questions have been formulated: How does process theories relate to the integration of management systems? How are process theories used within the field of process maturity? Which are the key elements in a process maturity model? Regarding the first research question a literature review was conducted in order to find out how organizations are working with integration of management systems. The main focus of this study was how integration of management systems relates to processes and stakeholder involvement. Secondly a literature review has been conducted on the concept of process maturity. The main aim was to find maturity models focusing on processes and process management, examine the structure of the maturity models used and explore how process management is described within different maturity models. Thirdly a conceptual model for measuring process maturity has been constructed. The content of this model has mainly been based on findings from the literature review conducted on articles on process maturity as well as a literature review of Process Management literature.
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Adle, Tobias. "Framtagning av metod för analys av livslängdsdata." Thesis, Uppsala universitet, Matematiska institutionen, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-322493.
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Husqvarna AB has as of today an extensive research and development department.This department serves to control the active product as well as the upcoming ones.The way that is done is through two different sets of tests. The first one being a longterm endurance test with aimed to unveil the durability of a product. Second and finalsort of test is a more one dimensional one. The aim is to determine different specificunits of interest like for example Newton (N). Today the R&D department has a great knowledge within normal distributed data andsomewhat less when it comes to the opposite, so called none normal distributed data.When endurance is of interest the likelihood of that to be of the latter sort is morecommon than not. For now no complete method has been appointed to make iteasier to process a situation of this kind. Studying ever unique case individually, bylooking at the data, has been the way to go. This causes an inconsistency in theanalysis and makes it purely based on which individual that has done it. Lastly it mayalso, unintentionally, ignore the large picture of how a product has progressed. To solve these problems this thesis work was put together to propose and conduct amethod. To form this method was an ongoing process throughout the whole thesisperiod. Ideas and thoughts were put forward to be reviewed and discussed. After aseries of tweaks to steer it towards the overall goal the method was finalized. Themethod that was put forward was firmly tested. Also a wide laboration in what themethod actually meant was done. The result was a method to be applied on none normal distributed data. This methodhas three parts. The first being the report where everything is embraced. The secondpart is a short manual for an operator to use. Last part is an example where themethod is put to use.
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Sandin, Viktor. "Analys inför maskininvestering hos ArcelorMittal Construction Sverige AB : Förbättringsmöjlighet med en ny rullformningsmaskin." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-55250.
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Denna rapport behandlar hur ett införskaffande av en ny rullformningsmaskin skulle kunna påverka produktionen på ArcelorMittal Construction Sverige AB i Karlstad. Detta är ett examensarbete för högskoleingenjör i maskinteknik vid fakulteten för hälsa, natur- och teknikvetenskap på Karlstads universitet under våren år 2017. Planerna i dagsläget är att ersätta tre av de nuvarande maskinerna med en ny effektivare maskin som klarar av att tillverka de valda maskinernas olika profiler. Den nya maskinen kan mycket snabbt byta profil från en till en annan. Det tar ca en minut att genomföra ett verktygsbyte med den nya maskinen jämfört med ca 90 minuter i dagsläget för en av de gamla maskinerna. För att med större säkerhet få reda på nuvarande ställtider genomfördes SMED som är en metod för att reducera ställtider. Arbetet med att reducera ställtiderna visar att med en bättre planering innan stället så kan ställtiden reduceras från 90 minuter till 83 minuter. Det stora problemet som var gemensamt för alla maskinerna i dagsläget var allt kringarbete som måste utföras, speciellt var det den manuella emballeringen som var den riktiga flaskhalsen i produktionen. Emballeringen utförs av samma operatör som kör maskinen och måste därför med jämna mellanrum avbryta körningen för att få tid att emballera produkten så att de kan placeras i färdigvarulagret för utleverans. Med den nya maskinen är det planerat att ha en helautomatisk emballering för att öka den tid som maskinen är produktiv. De nuvarande maskinerna har tillsammans under 2017 producerat plåt med en total verklig hastighet av 10,84 [m/min]. Den nya maskinen måste därför ha en minsta verkliga hastighet på 10,84 [m/min]. Beräkningar av nuvarande genomsnittliga orderstorlekar visar att den nya maskinen klarar minst av att producera med en verklig hastighet på 15,2 [m/min]. Detta medför att den nya maskinen klarar av att ersätta de nuvarande med en god marginal. Den verkliga beräknade hastigheten för den nya maskinen baserat på att coilbyte och profilbyte utförs mellan varje körning, vilket inte är fallet i dagsläget utan flera ordrar med samma form och råmaterial oftast körs efter varandra. Den nya maskinen medför en förbättring på minst 40 % i verklig hastighet. ArcelorMittal Construction Sverige AB har i dagsläget ett relativt stort råvarulager för att de snabbt ska kunna leverera den produkt som kunden beställer. Produkter går att få i nästan vilken färg som helst och i flera olika tjocklekar vilket medför att många olika produkter finns i råvarulagret. Fokuset i värdeflödesanalysen har därför varit på en av de mer frekventa råvarorna som passerar genom fabriken. För denna produkt fanns för nuvarande ett lager på 900 ton vilket är en buffert på ca 60 dagar. Då råvaruleveranser kommer dagligen så kan man minska råvarulagret till en buffert på istället 20 dagar och därmed minska det bundna kapitalet som är investerat i dessa råvaror.
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Grönlund, Ulla. "Quality improvements in forest products industry : classification of biological materials with inherent variations." Doctoral thesis, Luleå, 1995. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16899.
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Classifying logs and boards has an essential economic impact on the forest products industry. In contrast to other process industries the sawmills do not try to homogenize the raw material, but instead try to utilize the inherent properties of every single log and board in the best way. The aim of this thesis is to improve the quality control and decrease the costs for poor quality by introducing new methods to measure and describe the raw material. The work is focused on the grading procedures, and thereby 1) analyzing the relevance of the current classification systems and investigating the characteristics that are the most important ones in today´s grading procedures; 2) evaluating models developed to detect interior defects in logs automatically, giving suggestions for improvements; 3) suggesting ideas and methods for a classification system for tomorrow. The investigation comprises partly about 1100 Scots pine (Pinus silvetris) logs harvested on 16 randomly selected stands in Sweden and graded both by graders and by an automatic equipment; partly around 600 pine logs from permanent sample plots in Sweden and scanned by a CT-scanner (Computed tomography). The predictability between the grade of a log and its boards is very low, around 20%. Repeated investigations show that two graders assess the same grade on about 50% of the logs and boards, i.e., they judge the properties equally. The results also emphasize that the current manual classification systems are not in concordance with the customer´s demand and the natural variations in the material cannot be handled in an efficient way by current grading rules and transformed by human beings. The CT-scanner is used to measure the interior properties (defects) of a log. The validation of the methods and models shows that when the accuracy is improved for small knots, the models identify a knot with an accuray of +/- 5 mm. An embryo to a property index, PI, that gives an individual description of the inherent properties of logs and boards, is given. Based on customer-orientation and various strategies for describing log properties, a clustering procedure can be evaluated in order to form and describe appropriate classes (clusters, grades). Then, by an allocation rule with the function for assessing a grade, every single log or board can be automatically classified into one group.<br>Godkänd; 1995; 20070428 (ysko)
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Zobel, Thomas. "Environmental policy deployment in an environmental management system context : experiences from Swedish organizations." Licentiate thesis, Luleå tekniska universitet, Industriell Ekonomi, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16833.
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The Environmental Policy Deployment (EPD) process is identified as the heart of an Environmental Management System. Since so little is known about EPD, the aims of this thesis is to characterise the EPD process and identify factors of importance, with focus on the processes of identification and assessment of environmental aspects, and deployment of environmental goals. This new knowledge constitutes the basis for development of new methods within EPD. The empirical base for this thesis is taken from 46 organizations from three counties in Sweden and from 14 business units within the integrated forest product company Stora Enso in Sweden. Six major areas where the process of identification and assessment of environmental can be improved are identified: the definition of environmental aspects, the procedures for update of aspects, the aggregation of aspects, the exclusion of business considerations in the assessment, employee and stakeholder participation and the competence levels of people involved in the process. In addition to these six problem areas, results from the study within Stora Enso also indicate great problems with subjectivity in the identification and assessment process. It is concluded that the subjectivity has negative effects on the stringency and transparency of the process. This thesis includes an approach for a new method based LCA methodology, with focus on the identification of aspects. The goal deployment process within EPD was also characterized. This process is strictly controlled by specifications in ISO 14001/EMAS. Many organizations find it hard to measure their environmental goals and to set long-term horizons for their goals. In addition, the organizations usually do not involve their employees in the process.<br>Godkänd; 2001; 20070313 (ysko)
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Rastegari, Ali. "Strategic Maintenance Development focusing on use of Condition Based Maintenance in Manufacturing Industry." Licentiate thesis, Mälardalens högskola, Innovation och produktrealisering, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-28486.
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The growth of global competition caused remarkable changes in the way manufacturing companies operate. These changes have affected maintenance and made its role even more crucial in business success. In order to stay competitive, manufacturing companies need to continuously increase the effectiveness and efficiency of their production processes. Further, by introducing lean manufacturing the concern about equipment availability is increased and so, the demand for effective maintenance. Despite the increasing demand on reliable production equipment, few manufacturing companies work with strategic maintenance development. Moreover, conventional maintenance strategies such as corrective maintenance are not sufficient today to fulfill the industrial needs on maximum reduction of failures and degradations of manufacturing systems. The concept of maintenance has evolved over the last few decades from a corrective attitude (maintenance intervention after a failure), to a predictive attitude (maintenance intervention fixed to prevent the fault). Strategies and concepts such as Condition Based Maintenance (CBM) have thus evolved to support this ideal situation. CBM is a set of maintenance actions based on real-time or near real-time assessment of equipment condition, which is obtained from embedded sensors and/or external tests and measurements taken by portable equipment and/or subjective condition monitoring. CBM is becoming recognized as the most efficient strategy for carrying out maintenance in a wide variety of industries. However, the practical implementation of advanced maintenance technologies, such as CBM, in manufacturing industry is more scarce. Therefore, the objective with this research is to study on how to implement and develop an effective and efficient CBM strategy in manufacturing industry. This thesis will start with an analysis of the overall maintenance management to illustrate how to formulate a maintenance strategy, following with the focus on CBM; cost effectiveness of implementing CBM; an introductory review of applied CBM practices and CBM implementation process, all in manufacturing industry. The data was collected through case studies mainly at one major manufacturing site. The main part of the data was collected during a pilot project to implement CBM. As the result, a formulated maintenance strategy has been developed and presented. Factors to evaluate CBM cost effectiveness have been assessed. These factors indicate the benefits of CBM mostly in reducing probability of having maximal damage in production equipment and reducing production losses particularly in high production volumes. Further, a process of CBM implementation has been presented. Some of the main elements in the process are selection of the components to be monitored, techniques and technologies as well as installation of the technologies and finally how to analyze the results from the condition monitoring.
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Kvarnström, Björn. "Traceability in continuous processes : applied to ore refinement processes." Doctoral thesis, Luleå, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26677.
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Introduction and purpose: Traceability is central for the identification of the root cause(s) behind a product deviation and thus to achieve a product and process quality that is both high and even. Continuous processes contain several characteristics complicating traceability which are not usually discussed in the scientific literature. The overall purpose of this thesis is to provide a theoretical framework for traceability and to test and develop methods for traceability in continuous processes. Design/methodology/approach: A literature review and interviews with engineers in continuous processes were performed in order to identify existing traceability theories and applications as well as characteristics complicating traceability in continuous processes. In addition, experiments evaluating traceability applications in three continuous processes were conducted at the Swedish iron ore refinement company Loussavaara Kiirunavaara AB (LKAB). Radio Frequency Identification (RFID), chemical tracer, and ideal flow simulations were, for example, used within the studied applications.Findings: A theoretical framework for traceability in continuous processes is outlined based on existing scientific literature. Several traceability methods suitable for continuous processes are described and illustrated within the framework. Furthermore, the complicating characteristics in continuous processes that each method may deal with are described. This thesis also presents and illustrates how traceability may be achieved in three continuous processes operating within ore refinement industries.Research limitations/implications: The presented research gives an insight into traceability theory and more specifically into traceability problems in continuous processes. However, the empirical results from the experiments are based on three specific processes, and research in other processes should be performed to validate the results.Practical implications: The presented results illustrate how to increase the ability to trace, track, and predict the product location in processes where traceability previously has been difficult.Originality/value: Prior research has primarily focused on discontinuous processes. By contrast, this thesis presents traceability from a continuous process perspective as well as the design and development of traceability applications for three of these processes.<br>Introduktion och syfte: Spårbarhet är centralt för identifiering av rotorsaken(erna) bakom en produktavvikelse och därmed förmågan att uppnå en hög och jämn produkt- och processkvalitet. Kontinuerliga processer inrymmer ett flertal egenskaper som försvårar spårbarhet och som vanligtvis inte diskuteras i den vetenskapliga litteraturen. Det övergripande syftet med denna avhandling är att utveckla en teoretisk referensram för spårbarhet och att testa samt utveckla metoder för spårbarhet i kontinuerliga processer. Design/metod/forskningsansats: En litteraturstudie samt intervjuer med ingenjörer i kontinuerliga processer genomfördes i syfte att kartlägga befintliga spårbarhetsteorier och tillämpningar samt egenskaper som komplicerar spårbarhet i kontinuerliga processer. Dessutom utfördes experiment för att utvärdera spårbarhetsapplikationer i tre kontinuerliga processer inom det svenska järnmalmsförädlingsföretaget Loussavaara Kiirunavaara AB (LKAB). Radio Frequency Identification (RFID), kemiska spårämne och ideal flödessimuleringar är exempel på metoder som användas inom de studerade applikationerna.Resultat: En teoretisk referensram för spårbarhet i kontinuerliga processer baserad på befintlig forskningslitteratur har utvecklats. Flera spårbarhetsmetoder lämpliga för kontinuerliga processer beskrivs och illustreras inom den framtagna referensramen. Vidare beskrivs vilka komplicerande egenskaper i kontinuerliga processer som varje metod kan hantera. Denna avhandling presenterar och visar också hur spårbarhet kan uppnås i tre kontinuerliga processer som återfinns inom malmförädlingsindustrier.Forskningsbegränsningar/konsekvenser: Den presenterade forskning ger en inblick i spårbarhetsteorier och mer specifikt den spårbarhetsproblematik som återfinns i kontinuerliga processer. De empiriska resultaten från experimenten bygger dock på tre specifika processer, och fortsatt forskning kan med fördel utföras i andra processer för att validera resultaten.Praktiska konsekvenser: De presenterade resultaten visar hur man kan öka möjligheten att spåra, följa och prediktera en produkts position i processer där spårbarhet tidigare varit komplicerat.Originalitet/forskningsvärde: Tidigare forskning har främst fokuserat på diskontinuerliga processer. Denna avhandling presenterar dock spårbarhet utifrån ett kontinuerligt processperspektiv samt utvecklar och skapar spårbarhetsapplikationer för tre kontinuerliga processer.<br>Godkänd; 2010; 20101020 (bjokva); DISPUTATION Ämnesområde: Kvalitetsteknik/Quality Technology & Management Opponent: Professor Josse De Baerdemaeker, Katholieke Universiteit Leuven, Belgium Ordförande: Professor Bjarne Bergquist, Luleå tekniska universitet Tid: Onsdag den 24 november 2010, kl 13.00 Plats: D770, Luleå tekniska universitet
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Garvare, Rickard. "Processförbättring vid tillverkning av konstruktionskeramer." Licentiate thesis, Luleå tekniska universitet, Industriell Ekonomi, 1998. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26554.
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This thesis is about implementing Design of Experiments in enterprises manufacturing high performance ceramics. The manufacturing of ceramics is a complex process which involves problems with variation in product properties and in process performance. Every system in operation generates information that can be used to improve it. To be able to improve, measurements must be made and recorded data must be transformed into information. Design of Experiments is about performing tests using a minimum of resources to receive a maximum of information about a process or a system. Today most of the development of processes and products is done supported by expensive, and often misleading, one-factor-at-a-time experiments. To examine the possibilities of facilitating implementation of Design of Experiments, case-studies of two Swedish manufacturers of high performance ceramics were carried out. A model of implementing Design of Experiments is presented based on theory and the case-studies. The proposed model consists of three major phases: 1.Planning and education. 2.Pilot project with new ways of working. 3.Assessment, maintenance and improvement. Design of Experiments appears to be a well suited technique for structuring the development of manufacturing high performance ceramics. The implementation of Design of Experiments could be facilitated by long-term planning for process improvement. To make assessment and evaluation possible, process performance should be documented not only after but also before an implementation takes place. Both knowledge about statistics and knowledge about the studied processes should be present in the teams carrying out experiments.<br><p>Godkänd; 1998; 20070404 (ysko)</p>
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Lundqvist, Robert. "Quality in higher education : approaches to its management and improvement." Licentiate thesis, Luleå, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26452.
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Issues related to quality have received more attention in both society at large and higher education during the last decades. Concepts such as ‘Total Quality Management' and ‘continuous improvement' have become prevalent terms in the discussions around quality issues. The overall intention of this thesis is to study quality management in higher education, and more specifically, to see if and how perspectives with their origin outside higher education could provide means to improve the activities in that setting. The first element in the thesis is an attempt to formulate a general framework for quality management as it refers to higher education. Secondly, three specific investigations into quality issues in higher education are described. The first of these is a study of how self-assessments according to criteria in the Swedish Quality Award could be used in higher education. The second is a study of the use in higher education of quality systems and the ISO 9000 set of standards for such quality systems. The third is a discussion of similarities between developments in trade and industry on one hand and higher education on the other. As a very general conclusion, perspectives such as ‘Total Quality Management' are argued as being both relevant and meaningful in higher education. Interpreted comprehensively, this perspective and other related concepts seem not only valid, but also a means to find possible improvements. The areas which are discussed are both administrative or support activities and academic areas. As for results from the studies of self-assessments according to quality awards and of quality systems, both these instruments seem valid and useful in higher educational settings. The main intention with the actual kind of assessment which has been studied is that it could result in an understanding of possibilities for improvements. Even though the assessment method comprises some perspectives which are not common in higher education, it seems reasonable to assume that the intended result could be attained. The study of quality systems indicates that this kind of instrument can also provide a basis for improvements, although from another starting point. Implementations of such systems have in several cases resulted in a structure for quality management, whereby possibilities for improvements are more easily discerned. Both studies suggest, however, that use of instruments such as those considered is not unproblematic. Underlying motives and resource issues are some examples of possibly problematic aspects. The discussion of similarities between higher education and developments in trade and industry is finally an attempt to show that a TQM perspective is valid not only as means for improvement in areas such as administrative affairs, but also in core activities such as teaching and learning. However, even if the adoption of this perspective could result in improvements, there are obstacles to such an adoption. Change is seldom achieved in a straightforward manner in any kind of organisation. Besides any general obstacles, higher education also seems to bear a number of characteristics which may be particularly significant. Two such impediments which are discussed are the organisational structure and the use of grades.<br><p>Godkänd; 1997; 20070408 (ysko)</p>
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Söderholm, Peter. "Continuous improvements of complex technical systems : aspects of stakeholder requirements and system functions." Licentiate thesis, Luleå, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17487.
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In today's society we are all strongly dependent on correct functions of technical systems. These systems tend to increase in both complexity and criticality, at the same time as they often have a rather long life. During this long life the stakeholders' requirements on the functions of the systems change. In order to maintain a high level of stakeholder satisfaction organisations responsible for the system have to respond to the changes through system development and continuous improvements. When the technical system is both complex and critical it is even more important that the work with continuous improvements is done in a systemic and systematic way. This is because a modification may result in unwanted side effects and a small change in one part of the system may have a major negative impact on many other parts of the system, and also have far reaching decisive consequences. The purpose of this thesis is to explore and describe how an organisation can work with continuous improvements of complex technical system functions in the context of changing stakeholder requirements, in order to increase stakeholder satisfaction with a reduced amount of resources. To fulfil the stated purpose a case study supported by a literature study has been made. The case study focused on a modern combat aircraft, which is considered as a highly complex and safety critical system with stringent requirements on low life cycle cost. The result of the study may be described in two parts. The first part is a theoretical management framework that combines aspects of Quality Management, Requirements Management, and Health Management. The framework describes on a conceptual level how the work with continuous improvements may be enhanced through synergism achieved by the combination. The second part, which is based on both theoretical and empirical findings, is a model intended to support the work with continuous improvements. The model includes a number of combined and adapted methodologies and tools that enable traceability between stakeholder requirements and the critical system functions that should be covered by tools that support Condition Monitoring, Diagnostics, and Prognostics.
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Brandes, Carolina. "Stöttar kvalitetsteknik strategiskt arbete med informationshantering? : Mognadsmodeller och standarder som stöd för strategiskt arbete med verksamhetsinformation." Thesis, Mittuniversitetet, Avdelningen för kvalitetsteknik, maskinteknik och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-31750.
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Syftet med detta examensarbete var att identifiera vad en lämplig modell för en strategisk styrning av hantering av verksamhetsinformation borde innehålla. För att få reda på detta analyserade jag vilka modeller som används, vilka utmaningar som uppges och vilket stöd kvalitetsteknik gav i arbetet att ta sig an utmaningarna. Främst användes fördjupad litteraturstudie och analys av förekomst av värderingar, teman och uttryckta utmaningar i den valda litteraturen. En enkät sändes ut till åttio professionella inom arkiv- och informationshantering och intervjuer har genomförts med fyra personer med stor erfarenhet av arbete med informationsstyrning på en strategisk nivå. För att avgränsa området för studien har kvalitetsteknik avgränsats till värderingar och teman angivna i hörnstensmodell och kvalitetsprismodeller. Analysen indikerar att de i litteraturen angivna utmaningarna till stor del kan mötas av de värderingar och teman som förekommer inom kvalitetsteknik, samtidigt som såväl modeller för strategisk styrning av verksamhetsinformation och BPM, Business Process Management, kan ge stöd inte minst då det gäller att involvera intressenter/stakeholders och hålla deras intresse.<br>This study aimed to identify what a suitable model for Information Governance should contain. In order to find out, I analyzed which models people commonly used, which challenges people expressed and to what extent Quality Management supported dealing with these challenges. The study mostly relied on literature studies. The presence of values, key temes and challenges have been noted and analyzed. A questionnaire was sent out to 80 IG-professionals and interwievs were held with four people with in-depth experience from working with information Governance. In order to define the scope for this study ” Quality Management has been delimited to values and key themes used in Excellence Models and the corner stones of TQM. The analyzes indicates that the expressed challenges to a great extent could be met with values and key themes present in Quality Management. Models dealing with Information Governance and BPM, Business Process Management, could also support dealing with the challenges, esp. dealing with stakeholders.<br><p>2017-09-12</p>
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Jidetoft, Nina, and Lotta Rydström. "Våga. Våga pröva. Våga pröva nytt. : Modernt ledarskap från politik till praktik." Thesis, Mittuniversitetet, Avdelningen för kvalitetsteknik, maskinteknik och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-31756.
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Syftet med denna studie var att bidra med kunskapsutveckling kring framgångsfaktorer och utmaningar för strategiska ledare, inom Polismyndig-heten, för praktiserandet av ett modernt ledarskap. Studiens teoriavsnitt avgränsades till artiklar och litteratur som berör offentligt ledarskap och tillhörande ledarskapsutveckling med avseende på ett tillits-perspektiv – exempelvis; övergången till det moderna ledarskapet, rollen av organisationskulturen samt ständigt förbättringsarbete. Med utgångspunkt i relevant litteratur utformades en intervjuguide som låg till grund för semistandardiserade intervjuer med sex chefer på strategisk nivå i en av Polismyndighetens sju regioner. Utifrån intervjuresultat och relevant litteratur utformades därefter en enkät som skickades ut till 39 strategiska chefer, på motsvarande funktioner, i myndighetens övriga sex regioner. Arbetets omfattande empiri strukturerades utifrån ett hermeneutiskt förhållningssätt. Analysen av empirin beaktade, med utgångspunkt i studiens syfte och forskningsfrågor, såväl resultatet från intervjuerna och enkätunder-sökningen, som studiens teoretiska ramverk. Författarnas slutsats är att såväl framgångsfaktorer som utmaningar för praktiserandet av ett modernt ledarskap, inom Polismyndigheten, i flertalet fall kan ses ur ett kommunikativt perspektiv. Studiens resultat indikerar att dialogen mellan chefer på regional nivå, likväl den som tar plats mellan regional och nationell nivå, uppvisar utvecklingsutrymme.<br>The purpose of this study was to contribute with knowledge of success factors and challenges for strategic managers, in the Swedish Police Authority, in practicing a ‘modern leadership’. The chapter on theory was limited to articles and literature relating to leadership in the public sector and trust-oriented leadership development – such as the transition to a ‘modern leadership’, the role of organizational culture, and continuous improvement. An interview guide, which was developed based on relevant literature, formed the outline for semi-standardized interviews with six strategic leaders in one of the seven police regions. A questionnaire, deriving on the results from the interviews, was subsequently sent to 39 strategic managers, in corresponding functions, in the authority's additional six police regions. The extensive empirical work was structured in a hermeneutical approach. The analysis took, based on the study’s purpose and research questions, into account the results of the interviews and the questionnaire, as well as the theoretical framework of the study. The authors conclude that both success factors and challenges for practicing a modern leadership within the Police can, in most cases, be seen from a communicative perspective. The results of the study indicate that the dialogue between managers at a regional level, and the dialogue that takes place between regional and national level, shows opportunities for development.<br><p>2017-06-28</p>
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Hermansson, Joel, and Max Gottschalk. "Kartläggning och jämförelse av arbetssätt att hantera kvalitetsbristkostnader i logistikprocessen." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-36503.
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This bachelor thesis has been done in cooperation with IKEA of Sweden in Älmhult. It is about a mapping and comparison study of how different companies handle their cost of poor quality (COPQ) in their logistics processes. In this study, we have collaborated with Electrolux, Gekås and Rusta. IKEA has a high COPQ, this means when poor quality occurs in their processes. This has attracted much attention in recent years and there is room for improvement. The part of the value chain chosen in this project is the logistics process. The purpose of this bachelor thesis is to map IKEA´s logistics process, then compare IKEA´s way of working with other companies through a benchmarking study and finally come up with areas for improvement. This gave the questions: How does IKEA's operate in their logistics process today and handle their cost of poor quality? How do our other partners operate and handle their logistics processes and cost of poor quality? What are the similarities and differences between the different companies? To find out how IKEA operates in their logistics process today, it was decided to make a corporate visit to one of IKEA's CDC:s. Here, a questionnaire has been used to get the information that was needed. Later this questionnaire formed the basis for the survey that was used to gather information from our other partners. To gather information from our partners, we have used benchmarking. This was done to see how our other partner organizations operate today and how they work accordingly to this study. The first step of the benchmarking, was to send out the survey to our partners. Later we followed up with personal interviews and visits. The collected data from the different companies formed the basis of the status report of them all. In the analysis, IKEA has been compared to each of our different partners and a summary of the analysis has been made. With the analysis finished, it has been clear that IKEA has some problems in their logistic process and that the cost of poor quality can decrease. This gave us some areas that IKEA can make improvements in. After that conclusion, forklift damages and packaging design are two areas that IKEA can make big improvements in.<br>Detta examensarbete har gjorts tillsammans med IKEA of Sweden i Älmhult. Det handlarom en kartläggning och jämförelse av hur olika företag hanterar sinakvalitetsbristkostnader inom logistikprocessen. Våra samarbetspartners i dettaarbetet är Electrolux, Gekås och Rusta
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Hallencreutz, Jacob. "Models and meaning : on management models and systems of meaning when implementing change." Licentiate thesis, Luleå : Luleå university of technology, 2009. http://pure.ltu.se/ws/fbspretrieve/3350479.
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Glad, Annica. "Elevhälsa – en illusion av kvalitet? : En fallstudie om vilka faktorer som hindrar eller skapar förutsättningar för kvalitets- och systematiskt förbättringsarbete inom elevhälsan." Thesis, Mittuniversitetet, Avdelningen för kvalitetsteknik, maskinteknik och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-31755.
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Syftet med uppsatsen var att bidra med kunskap kring hur elevhälsan upplever, och förhåller sig till, den stora frihetsgraden när det gäller att kvalitetssäkra och ständigt förbättra hur de omsätter dagens styrning via värdegrund till handling. Den teoretiska referensramen har främst fokuserat på teorier inom kvalitets- och förbättringsområdet samt skolutveckling, tvärprofessionella team, värderingsbaserat ledarskap och styrning och är baserat på sju olika teman: värdegrund, utveckla ett engagerat ledarskap, arbeta med processer, skapa förutsättningar för allas delaktighet, basera beslut på fakta, sätt kunden i centrum, styrning och säkring samt utveckling och förbättring. I teoriavsnittet presenteras även exempel på styrdokument för att ge läsaren en förståelse för vilka ramar elevhälsan har att förhålla sig till. Uppsatsen har i stort strävat efter att följa den kvalitativa forskningsprocessen utifrån kvalitativa fallstudier och Mixed Methods Designs. Som datainsamlingsmetod valdes gruppenkäter och fokusgruppsintervjuer och tre elevhälsoteam med sammanlagt elva medlemmar har deltagit. Metoddesignen bygger vidare från den teoretiska referensramen och är indelad på samma sätt med de sju olika teman. Hantering av data och analys har även utgått från de sju teman och analysen har följt fyra steg som slutligen redovisar en övergripande tolkning av de sammanlagda svaren i enkäten och från fokusgruppsintervjuerna. Författarens slutsats är att olika värdegrund- och- synsätt- värderingssystem som de tre elevhälsoteamens medlemmar uppvisar gör att värdegrunden omsätts på olika sätt i praktiken i de olika skolorna.<br>The aim of the paper was to contribute knowledge about how student health perceives and relates to the high degree of freedom in quality assurance and continually improving the way in which they translate current governance through value to action. The theoretical frame of reference has focused on theories of quality and improvement, as well as school development, cross-professional teams and value-based leadership and governance, and are divided into seven different themes: value basis, develop a committed leadership, work with processes, create the conditions for everyone's participation, basing decisions on facts, put the customer at the center, control and hedging as well as development and improvement. The theoria section also presents examples of control documents to give the reader an understanding of the framework for student health. The essay has largely sought to follow the qualitative research process based on qualitative case studies and Mixed Methods Designs. As the data collection method, group kits and focus group interviews and three student health teams with a total of eleven members were selected. The method design is based on the theoretical reference frame and is divided in the same way with the seven different themes. Data and analysis management has also been based on the seven areas, and the analysis has followed four steps presents an overall interpretation of the aggregate answers in the survey and from the focus group interviews. The author's conclusion is that different value-based assessment systems that the three student-health members show makes the value base in various ways implemented in practice.<br><p>2017-08-16</p>
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Papadimitriou, Andreas. "Modeling, Identification and Control of a Wall Climbing Robot Based on Vortex Actuation." Thesis, Luleå tekniska universitet, Drift, underhåll och akustik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70626.
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Lauritzen, Ulrika. "Verksamhetsutveckling i en funktionell struktur : Hur kultur, struktur och ledarskap samverkar." Thesis, Mittuniversitetet, Avdelningen för kvalitets- och maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-36755.
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Under de senaste åren har energibranschen mött nya utmaningar som förändrat förutsättningarna, i en tidigare stabil verksamhet som kännetecknats av god tillväxt och kapitalintensitet. De nya utmaningarna inom branschen har lett till ett behov av att förändra sättet att organisera och leda verksamheterna. Många koncerner inom energibranschen har hierarkiska, funktionsstyrda strukturer som betraktas som mekaniska, reaktiva system med ett internt fokus. De nya förutsättningarna kräver hög flexibilitet, proaktiva system med ett externt fokus. Total Quality Management (TQM) har lanserats som framgångsrika koncept för att uppnå detta. Studier visar att en lyckad implementering av dessa koncept kräver en stark företagskultur, ett engagerat ledarskap och en struktur anpassad till TQM (Bergman och Klefsjö, 2012; Ljungberg och Larsson, 2012) Många organisationer i energibranschen står inför en genomgripande förändring av kultur, struktur och ledarskap. Genom att medvetandegöra och belysa dessa faktorer ökar möjligheterna att motverka oönskade kulturella effekter och därmed underlätta förändringen. Föreliggande studie har undersökt hur kultur, struktur och ledarskap samverkar genom att kartlägga dessa faktorer, i en organisation med en funktionell struktur. Studien har genomförts som en fallstudie där även en organisations styrkor respektive svagheter avseende kultur, struktur och ledarskap ur ett TQM-perspektiv har beskrivits. Resultatet visade att samverkan mellan kultur, struktur och ledarskap kan beskrivas som en iterativ, interagerande process. Ledarskapet har förmåga att påverka värderingar, kultur och struktur, samtidigt som strukturen bär på värderingar och kultur som påverkar ledarskapet. Ledarskapet i fallstudien dominerades av värderingar, som stämmer överens med TQM, även kulturen dominerades av dessa värderingar, trots den funktionella strukturen. Men studien påvisade även att den funktionella strukturen hade en viss inverkan både på kultur och ledarskap. Resultatet visade också en brist på struktur anpassad till den rådande kulturen och ledarskapet i fallstudien, eftersom den funktionella strukturen visade sig vara dominerande<br><p>2019-08-29</p>
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Lidgren, Albin. "Concept Study and Design of a New Torque Calibration Rig." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65712.
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When buying a new car today, the customer often expects to get a vehiclewith high quality. Each vehicle or engine should therefore be checked toassure quality. The same goes for clutches and couplings. A powerful enginebecomes useless when a clutch slips. Reliable torque measurement istherefore essential to the automotive industry. The herewith Bachelor thesisproposes a new torque calibration rig for online torque measurement in couplingapplications.The concept encompasses a servo motor with its associated electronics, agearbox to create the high torques (3 kNm), a reference torque transducer,and mounting elements or adapters. From the concept generation phase, thethesis includes CAD-models of the torque calibration rig with mathematicalmodels leading to the calculation of the measurement uncertainty of the calibrationsystem.This work was performed at BorgWarner PowerDrive Systems AB in Landskronaduring eight weeks; the two remaining weeks were completed in Lulea.
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Abbas, Tabassom, and Sofia Sandblom. "Digitalisering av arbetsflöde för avvikelsehantering på inköpt material : En fallstudie utförd på Nolato Cerbo AB i Trollhättan." Thesis, Högskolan Väst, Avdelningen för Industriell ekonomi, Elektro- och Maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-15210.
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Ett examensarbete genomfördes på Nolato Cerbo AB i Trollhättan, med målet att utforma ett förslag på ett digitalt arbetsflöde för avvikelsehantering på inköpt material. De frågeställningar som arbetet skulle besvara var: • Kan ett arbetsflöde för avvikelser på inköpt material digitaliseras för att underlätta dokumentering, spårbarhet och hantering av information? • Hur ska arbetsflödet utformas för att uppnå de interna intressenternas krav och behov? • Vilka fördelar respektive nackdelar kan uppstå vid införandet av ett digitalt arbetsflöde? För att kartlägga hur flödet ser ut i nuläget samt problem med flödet, genomfördes intervjuer med de berörda avdelningarna. Intervjuerna tog också upp de anställdas åsikter om ett digitalt flöde. Ett flödesschema skapades och därefter identifierades slöseri i flödet. En benchmarking genomfördes också på Varner Retail Logistics AB, för att se hur ett annat företag arbetar med ett digitalt flöde för avvikelsehantering. Ett nytt flödesschema togs fram för avvikelsehantering på inköpt material, där de manuella delarna digitaliserades. Efter att ett test genomförts med berörd personal kunde det konstateras att det digitala flödet kommer underlätta dokumentering, spårbarhet och hantering av information. De interna intressenternas krav och behov uppfylldes också. Fördelar som respondenterna anser kan uppnås med det digitala flödet var tidsbesparing, ingen manuell pappershantering, snabbare spridning av informationoch att rätt information fylls i från början. Nackdelar som anses kan uppstå är att det kommer ta tid för personalen att lära sig och vänja sig vid det nya arbetssättet, samt begränsningar i mobilapplikationen. Slutsatserna som drogs var att det digitala flödet kommer att kunna användas om det utformas enligt författarnas förslag, men förändringar kan komma att ske i flödet i framtiden. Det kan också finnas personal på Nolato Cerbo AB som känner en osäkerhet inför digitalisering och förändringar. För att implementeringen ska bli lyckad kommer därför utbildning och information om digitaliseringens möjligheter krävas.<br>A case study was performed at Nolato Cerbo AB in Trollhättan, with the objective to design a suggestion of a digital workflow for deviation handlingfor purchased material. The following questions were issued to fulfil the objective of the case study: • Is a workflow for deviation handling for purchased material possible to digitalize in order to facilitate documentation, traceability and information handling? • How should the workflow be designed in order to reach the involved personnel's requirements and needs? • Which advantages and disadvantages could emerge from the implementation of a digital workflow? To be able to map the current workflow and its issues, interviews with the involved departments were conducted. The interviews also brought up the employees' opinions of a digital workflow. A flowchart was created and waste in the workflow was identified. A benchmarking was performed at Varner Retail Logistics AB, to get an insight of how another company uses a digital workflow for deviation handling. A new flowchart for deviation handling for purchased material was created, where the manual parts of the flow were digitalized. After a test had been performed with concerned employees, it could be stated that the digital workflow will facilitate documentation, traceability and information handling. The requirements and needs for the involved personnel were also fulfilled. Advantages that the respondents consider can be achieved with the digital workflow was time save, no manual handling of paper, a faster distribution of information and that the correct information will be filled in from the beginning. Disadvantages that the respondents consider can emerge is that it will take some time for the employees to learn and adapt to the new way of working and the limitations of the mobileapplication. The conclusions that were drawn was that the digital workflow will be able to be used if it's designed according to the suggestion, although changes to the workflow might be performed in the future. There might also be employees at Nolato CerboAB which afraid of digitalization and changes. For the implementation to be successful, an education and information about the possibilities that digitalization brings will be required.
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Sedghi, Mahdieh. "Data-driven predictive maintenance planning and scheduling." Licentiate thesis, Luleå tekniska universitet, Industriell Ekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80828.
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The railway track network is one of the major modes of transportation and among a country’s most valuable infrastructure assets. Maintenance and renewal of railway infrastructure have a vital role in safety performance, the quality of the ride, train punctuality, and the life cycle cost of assets. Due to the large proportion of maintenance costs, increasing the efficiency of maintenance through optimised planning can result in high amounts of cost-saving. Moreover, from a safety perspective, late maintenance intervention can result in defective track and rollingstock components, which in severe cases, can cause severe accidents such as derailments. An effective maintenance management system is required to ensure the availability of the infrastructure system and meet the increasing capacity demand. The recent rapid technological revolution and increasing deployment of sensors and connected devices created new possibilities to increase the maintenance strategy effectiveness in the railway network. The purpose of this thesis is to expand the knowledge and methods for planning and scheduling of railway infrastructure maintenance. The research vision is to find quantitative approaches for integrated tactical planning and operational scheduling of predictive condition-based maintenance which can be put to practical use and improve the efficiency of the railway system. First, a thorough literature review study is performed to identify improvement policies for maintenance planning and scheduling in the literature and also to analyse the current approaches in optimising the maintenance planning and scheduling problem. Second, a novel data-driven multi-level decision-making framework to improve the efficiency of maintenance planning and scheduling is developed. The proposed framework aims to support the selection of track segments for maintenance by providing a practical degradation prediction model based on available condition measurement data. The framework considers the uncertainty of future predictions using the probability of surpassing a maintenance limit instead of using the predicted value. Moreover, an extensive total maintenance cost formulation is developed to include both direct and indirect preventive and corrective costs to observe the effect of using cost optimisation and grouping algorithms at the operational scheduling level. The performance of the proposed framework is evaluated through a case study based on data from a track section of the iron ore line between Boden and Luleå. The results indicate that the proposed approach can lead to cost savings in both optimal and grouping plans. This framework may be a useful decision support tool in the automated planning and scheduling of maintenance based on track geometry measurements.
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Fransson, Christoffer. "Crowdsourcing för en starkare krisberedskap i Sverige : Ett avstamp mot framtiden." Thesis, Mittuniversitetet, Avdelningen för kvalitetsteknik, maskinteknik och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-31757.
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Syftet med uppsatsen är att bidra med kunskapsutveckling kring hur ”crowdsourcing” idag används och upplevs som ett stöd för att säkra och utveckla kvalitet inom svensk krisberedskap. Detta uppnås genom tillämpning av en explorativ, pragmatisk och abduktiv ansats av mixad metod. Insamlad empiri utgörs av en enkät med respondenter från 119 kommuner samt fyra kvalitativa intervjuer. Resultatet visar att crowdsourcing inom ramen för svensk krisberedskap inte är ett känt begrepp bland de responderande kommunerna men att intervjupersonerna känner till begreppet i relation till krisberedskap. Idag tillämpar Malmö Stad och Krisinformation.se crowdsourcing inom ramen för deras krisberedskapsrelaterade verksamhet, pilotförsök med crowdsourcing-liknande metoder pågår hos SOS Alarm. Västerås Stad diskuterar området inför eventuell framtida utveckling. Den verksamhet som idag bedrivs inom krisberedskapsrelaterad crowdsourcing inom Sverige är begränsad till endast ett fåtal aktörer som bedriver verksamhet eller pilotförsök. Crowdsourcing som generellt begrepp är ännu inte välbekant bland många svenska kommuner och än mindre ur ett krisberedskapsperspektiv. Vidare finns det kvalitetsmässiga farhågor över till exempel inmatning av felaktiga data som genererar följdkonsekvenser. Det teoretiska ramverket presenterar flera olika forskningsområden som kan tillämpas för att lösa dessa farhågor. Det uppsatsen tillför forskningen är ett sammanställt utgångsläge utifrån existerande forskning och praktisk erfarenhet med goda möjligheter för framtida forskning (eller tillämpning) inom ett för Sverige synnerligen ungt och outforskat forskningsområde.<br>The purpose of this thesis is to add to the development of a knowledgebase concerning how crowdsourcing is used and experienced as a support to secure and develop quality within Swedish societal crisis management. This is accomplished by applying an explorative, pragmatic and abductive approach of mixed theory. Collected data consists of one survey with 119 respondents (municipalities) along with four qualitative interviews. The result show that crowdsourcing within Swedish societal crisis management is not known by the survey respondents but known within that context by the participants of the interviews. Malmö City and krisinformation.se applies crowdsourcing methods as a part of their crisis preparedness operation today, trials with crowdsourcing-like methods is conducted by SOS Alarm and last Västerås City are discussing this area for potential future development. Crisis related crowdsourcing operations within Sweden today are reduced to a few actors conducting either regular operations or trials. Crowdsourcing as a general term is not yet well known among many Swedish municipalities and even less known with a crisis preparedness perspective. Additionally, there are quality related concerns such as input of erroneous data leading to further consequence. The theoretical framework presents several research areas that can be applied in solution to such quality concerns. This thesis addition to research is a compiled platform based of existing research and practical experiences with plenty of room for future research or practical application within a for Sweden particularly young and unexplored field of study.<br><p>2017-06-28</p>
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Johansson, Peter. "Quality management and sustainability : exploring stakeholder orientation." Licentiate thesis, Luleå : Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1757/2007/01/.
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Miefalk, Julia. "Hur utvecklas förslagsystemet i en konsultverksamhet? : En studie av förbättringsarbete på PlantVision." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75468.
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Genom att generera ständig förbättring kan en organisation vara konkurrenskraftig och fortsätta anpassa sig till en föränderlig värld. Förslagsystem är ett sätt att involvera hela organisationen i arbetet med ständiga förbättringar. Genom medarbetarna uppdagas idéer och förslag som är relevanta för den dagliga verksamheten och genererar inkrementella förbättringar som resulterar i utveckling och innovation. Syftet med studien var att undersöka hur förslagsystemet i ett konsultbolag kunde utvecklas för att hantera och organisera förbättring. Tidigare studier visar hur förslagsystem byggs på två organisatoriska pelare, företagskultur och företagsstruktur. För att kunna skapa en ändamålsenlig hantering och organisering av förbättringsförslag behövde därför både strukturella och kulturella aspekter av förslagsystemet undersökas. Studien initierades med att kartlägga fallföretagets förslagsprocess för att skapa en övergripande bild av den befintliga strukturen. Därefter togs de kulturella aspekterna i beaktning genom medarbetarnas uppfattningar av förbättringsarbetet och förslagsprocessen. Genom tematisk analys upprättades koder, faktorer och teman som redogör centrala områden för ett förslagsystem och dess framgång. De identifierade kulturella och strukturella aspekterna av förbättringsförslag användes sedan för att beskriva förslagsarbete i en ny modell. De rekommendationer som togs fram för fallföretagets fortsatta arbete ansågs till stor del påverka strukturen för förslagsystemet. Genom att formulera en målsättning som på ett enkelt sätt redogör syftet med organisationens förbättringsarbete skapas en förståelse för vad förbättringsarbetet önskar uppnå. Att reflektera kring organisatoriska förutsättningar samt hur engagemanget från ledning och medarbetare fungerar genererar förståelse för kulturella och strukturella aspekter som företaget har att förhålla sig till. Fallföretaget PlantVision, som konsultbolag, behöver särskilt undersöka hur de ska hantera timdebitering kontra förbättringsarbete för att medarbetarna ska motiveras att arbeta med båda. Timdebiteringen visade sig påverka medarbetarna i deras arbete med förbättringar då konsulter förväntas debitera arbetade timmar till kund och inte fokusera på interna förbättringar. Samtidigt måste organisationen fortsätta förbättras för att vara konkurrenskraftiga, och i en konsultverksamhet bör konsulterna involveras i förbättringsarbetet eftersom de har kontakten med kunden. Medarbetarna bör därför motiveras till att arbeta med en kombination av timdebitering och förbättringsarbete. Det är även värdefullt att analysera engagemanget för förbättringsarbete, både bland ledning och medarbetare för att kunna avgöra hur de ska fortsätta motiveras till att engagera sig i ständig förbättring. För att skapa ytterligare struktur i förbättringsarbetet upprättades ett nytt förslagsystem online som ett förslag på hur PlantVision kan hantera förbättringsförslag på ett effektivare sätt. Ett förslagsystem som främjar transparens och struktur samt ökar den interna kommunikationen mellan medarbetare och ledning antas medföra ett förbättringsarbete som drivs av medarbetarna. Studien visar på att konsultbolag har specifika förutsättningar som bör tas i beaktning vid upprättande och utvecklande av förslagsystem. I övrigt redogör studien hur målsättning, engagemang, transparens och struktur samt kommunikation bygger ett framgångsrikt förslagsystem och lägger grunden för inkrementellt förbättringsarbete.
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Svartling, Helena. "Tvärfunktionell samordning i en matrisorganisation : Vad finns det för möjligheter?" Thesis, Mittuniversitetet, Avdelningen för kvalitetsteknik, maskinteknik och matematik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-28509.
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Omvärlden ställer i dagsläget stora krav på resurssnålhet och effektivitet i organisationer somresulterar i nedskärningar, organisationsförändringar och sammanslagningar. Ofta genomförsdessa förändringar utan grundade konsekvensanalyser, vilket kan resultera i att organisationerfår dras med komplicerande strukturer som medarbetarna i efterhand får kämpa för att kommatillrätta med. Denna studies ämne initierades av en länsteater, som för några år sedantillsammans med andra konstnärliga verksamheter slogs samman till ett gemensamt bolagsom resulterade i en matrisorganisation. Som en följd av detta fick de olika verksamheternaen gemensam marknadsavdelning.Denna studie utfördes med aktionsforskning som övergripande metod, samt verktyg ochtekniker inom Offensiv kvalitetsutveckling, för att se vilka möjligheter som fanns att få tillstånd en förbättring av den tvärfunktionella samordningen mellan teatern ochmarknadsavdelningen. Resultatet visade att problematiken till en del springer urorganisationens övergripande strukturella uppbyggnad. Resultatet visade också avsaknad avverksamhetsplaner, gemensamma mål och visioner, framförhållning, samt brist pågrundläggande strukturer såsom roller, ansvarsområden, samt gemensamma rutiner. Dettasammantaget försvårar ett medvetet förbättringsarbete inom ramen för Offensivkvalitetsutveckling. Trots detta visade resultatet på att vilja fanns hos studiens deltagare attkomma tillrätta med problemen.<br>To meet the increasing demands of today regarding improved production efficiency, it oftencomes to downsizing, organizational change and mergers. These changes are often carried outwithout thorough analysis of impact, which could lead to growing complexity andcomplicated organizational structures that is left for the co-workers to fight to overcome. Thesubject of this studie was initiated by a theater, that since a couple of years ago, along withother performing art companies, were merged and resulted in a matrix organization. Thatamong other things led to, that a new marketing department was created.This studie used action research as an overall method along with tools from TQM (TotalQuality Management). This was an attempt to determine possibilities for improvement in thecross functional coordination between the theater and the marketing department. The resultshow that the existing problems partly originate from the companies organizational structure.The result also showed lack of business plans, common goals and visions, foresight. Lack ofbasic structures, such as roles, responsibilities and common routines complicates a consciousimprovement within the frame for TQM. Even so, the result also showed that the participantsof the studie were willing to solve these problems.
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Liedberg, Jesper. "From reactive maintenance towards increased proactiveness through digitalisation : Vital factors to achieve momentum towards preventive maintenance using digital tools." Thesis, Jönköping University, JTH, Industriell organisation och produktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-54006.
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At today's manufacturers, reactive maintenance mostly takes place instead of prevention. At the same time, maintenance is seen as a necessary evil and many companies have no direct strategies or goals for maintenance. In today's maintenance, Industry 4.0 with digitalisation has begun research in and new methods and ideas are produced for more efficient maintenance. The purpose of this study is: To increase the knowledge of how manufacturers can understand and develop a strategy to achieve preventive maintenance and at the same time find essential elements for maintenance digitalisation. Through a literature study, the existing research in prevention and digitalisation in maintenance was studied. To supplement, a single-case study was also conducted that included interviews from a manufacturing company that has reactive maintenance. Two focus groups were also conducted, one on the case company but also on another manufacturing company to compare the answers to the theory. The study shows that there are several root causes that cause manufacturers to remain in reactive efforts in maintenance and it can be difficult to get out. This creates expensive costs for the manufacturer and stress for the maintenance operators. To get out and move towards more prevention, it is important to start with the basics, which is to have a strategy that has been jointly agreed within the organisation. Therefore, it is also important with training and choosing the right kind of maintenance depending on the machine and complexity. The last research question is more complex and it turned out that there are factors in digitalisation where manufacturing companies with reactive maintenance develop and use. By understanding the causes and seeing elements to deal with preventive maintenance, manufacturers can practically use the study to achieve their maintenance goals. Regarding digitization, it is a step further and try to see if it is practical to implement at a company with reactive maintenance. The study only covered information about a specific machine that is the base for generalisation within the case company factory plant. At the same time, the study focused only on the step between reactive and preventive maintenance in order to delimit the theoretical part.
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Garbac, Michelle, and Oscar Hedberg. "Uppbyggnad av kvalitetsledningssystem enligt ISO 9001 : En analysstudie för förberedelse inför certifiering av ISO 9001:2015." Thesis, Jönköping University, Tekniska Högskolan, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-54039.
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This report presents the performance and results of an analysis study conducted at a small company in the foundry business. The purpose of the study has been to prepare the company for a certification of the quality standard ISO 9001: 2015. The reason for the study is to create a foundation for a future quality management certification for a small company that wants to develop its business and expand its customer base. The study begins with a description of the problem, which involves an examination of the gap that exists between the company's current quality management system and the requirements of ISO 9001. The collection of all essential information in the form of relevant theories and data has taken place through theory research and informative meetings with the company's management. The workflow is described to clarify what the process looked like. A description of the current situation is given to gain understanding of the starting point and to have as a basis for analysis of deficient functions and processes within the business. In the analysis a comparison is made of the current situation with the requirements set in the ISO 9001 standard, and then proposals for measures to cover the analyzed gaps are presented. The results of the study give the company a thorough description of what measures are required to be able to accomplish an approved certification. The study provides suggestions for concrete measures such as which platform can be used to create a quality management system, which managing documents should be included, suggestions for quality goals and how these should be measured regularly. Descriptions of important core processes in the form of routines with associated templates have been produced to create continuity. With the help of these measures, a suggestion of a functioning management system was presented that is suitable for the smaller business.
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Cronemyr, Peter. "Towards a learning organization for product development." Licentiate thesis, Linköpings universitet, Institutionen för konstruktions- och produktionsteknik, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-100855.
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The costs of late changes due to earlier misunderstandings in product development are very high, even though no company wants to admit how high they really are. From experience in Swedish industry and based on results from previous research found in the literature, the conclusion is drawn that people need to talk to one another to be able to understand one another and thereby avoid misunderstandings. Information technology can be used to increase the frequency and amount of information communicated within a product development organization but it cannot replace talking. This project aims at delivering methods that are intended to improve effectiveness of product development, i.e. fewer misunderstandings will contribute to improved quality and, as a consequence, lowered costs and shortened lead-times. The project also aims at delivering a method that is intended to improve organizational learning, which would in turn improve a company’s ability to adapt more easily to a changing environment. The ultimate goal and vision is more competitive companies. The following contributions to the theory of Engineering Management are presented in this thesis: (i) ‘An Engineering Management Model for Improvement of Organizational Learning’ is a theoretical model of how three management disciplines can be used together to improve organizational learning within a product development organization, based on the framework of Senge’s five disciplines. (ii) ‘Phantom Turbine Development’ is a presentation of how people engaged in development of technology and processes for product development can share goals and visions based on future customer needs. (iii) ‘Process Improvement Simulations’ are a method for simulating and comparing improvements to the development process before they actually take place. (iv) ‘Knowledge Overlapping Seminars (KOS)’ are a communication method for engineers in a product development team with the purpose of eliminating misunderstandings. Obstacles that occur in ‘ordinary meetings’ are avoided in a KOS. Action research has been used as research method. It has been performed at ABB STAL, a company developing gas and steam turbines, where the researcher of this project is employed. The approach used, collaborative action inquiry, is characterized by the researcher having an almost total identification with the activities and direction of change of the company, which is the case since the research is to a great extent based on the researcher’s own experience.<br>Kostnaderna för ändringar sent i produktutvecklingsprojekt på grund av missförstånd tidigare i projektet är mycket höga, även om inget företag vill erkänna hur höga de verkligen är. Baserat på erfarenheter från svensk industri och på resultat från tidigare forskning inom området drasslutsatsen att människor måste tala med varandra för att kunna förstå varandra och därmed undvika missförstånd. Informationsteknik kan användas för att öka frekvensen och mängden information som kommuniseras inom en produktutvecklingsorganisation men den kan inte ersätta samtal mellan människor. Detta forskningsprojekt har som mål att presentera metoder som ska kunna användas för att förbättra måluppfyllelsen vid utveckling av nya produkter, det vill säga färre missförstånd ska ge en förbättrad produkt- och processkvalitet, vilket i sin tur medför sänkta kostnader och förkortade ledtider. Ytterligare ett mål är att presentera en metod för att öka det organisatoriska lärandet, vilket skulle förbättra en organisations förmåga att anpassa sig till förändringar i dess omvärld. Det övergripande målet är mer konkurrenskraftiga företag. Följande bidrag till forskningsområdet Metoder och organisation för ledning av ingenjörsarbete (Engineering Management på engelska) lämnas i denna avhandling: (i) En modell för ledning av ingenjörsarbete är en teoretisk modell av hur tre olika ledningsfilosofier kan användas tillsammans för att förbättra det organisatoriska lärandet inom en produktutvecklingsorganisation baserat på Senges ramverk ‘De fem disciplinerna’. (ii) Fantomturbinutveckling är en presentation av hur ingenjörer som arbetar med utveckling av teknik och process för produktutveckling kan dela mål och visioner baserade på framtida kundbehov. (iii) Simulering av processförbättringar är en metod för att simulera och jämföra förbättringar av en utvecklingsprocess innan de införs. (iv) Kunskapsöverlappningsseminarium (KOS) är en kommunikationsmetod som ingenjörer i ett produktutvecklingsteam kan använda för att eliminera missförstånd. Hinder som uppträder i vanliga möten undviks i KOS. Aktionsforskning har använts som forskningsmetod. Forskningen har utförts på ABB STAL, ett företag som tillverkar gasturbiner och ångturbiner, där författaren till denna avhandling är anställd. Det använda angreppssättet, samverkande aktionsforskning, karaktäriseras av att forskaren i stort sett totalt identifierar sig med företagets aktiviteter och förändringsriktning, vilket väl överensstämmer med forskningen inom detta projekt som till stor del är baserat på författarens egna erfarenheter.
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Hansson, Jonatan, and Jonas Duong. "Studie av process och maskinduglighet på Electrolux Laundry Systems plåtberedningsmaskiner." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-84864.
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Inom industriell tillverkning har alla maskiner en teoretisk duglighet. Den skiljer sig däremot från den faktiska när den sätts i en process, där påverkas dugligheten av samtliga resurser i processen. Electrolux Laundry Systems har problem i sin plåtberedning som beror på att dugligheten bland plåtberedningens maskiner är okänd. Projektet handlar om att beräkna dugligheten i Electrolux Laundry Systems plåtberedningsmaskiner samt ge förslag på hur dugligheten kan förbättras och övervakas. De studerade maskinerna består av tre stansar och fem bockningsmaskiner. Dugligheten mäts i duglighetsindexet Cpk. Mätdatan plottas även i diagram måttvis. Resultatet från studien visar att samtliga plåtberedningmaskiners duglighet beräknades till under 1,0. Ett godkänt värde bör ligga mellan 1,33 och 1,66. Det betyder att plåtberedningsprocessen inte är duglig.
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Larsson, Christoffer. "Kundorderstyrd tillverkning och kontinuerliga flöden : En fallstudie utförd på Mercado Medic AB, Lidingö Stockholm." Thesis, Uppsala universitet, Institutionen för samhällsbyggnad och industriell teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412448.
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The study was conducted at the organisation Mercado Medic AB, whohad problems regarding production planning in one of their assemblysections. The assembly section that was studied produces componentsthat are later to be used in the assembly of medically customizedchairs. The study examines both how work is conducted in thesection, and how orders are communicated to and within said section.Data was collected by observing the assembly section, and byinterviewing both the personnel and planning manager. Cycle-timeswere also measured for the activities that are carried out withinthe section. The data was then analysed with theories originatingfrom the sphere of quality management and Toyota Production Systems.The analysis shows that the current state of communications to, andwithin the section, is vertical. Orders are communicated frommanagement top – down, thus having the section produce componentswithout an actual need from downstream sections. This way ofproducing is more commonly known as a "push-system".The study presents, based on the analysis, a future state for howthe use of a kanban system and a simplified and balanced workflowwould solve the problem currently had with production planning. Thisway of producing is more commonly known as a "pull-system". Thefuture state is recommended to be implemented by the personnel inthe form of "experiments" (PDSA/PDCA-cycles), thus allowing thepersonnel to learn more about their process while experimenting.Lastly, it is important to note that the future state that thisstudy presents is not necessarily the best state that can be. Oncethe future state presented in this study is achieved, a new andimproved future state should be made. It is the endeavour ofstriving towards a continuously evolving future state that ensurescontinuous improvements.
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Holmgren, Mattias. "Maintenance-related incidents and accidents : aspects of hazard identification." Doctoral thesis, Luleå : Division of Operation and Maintenance Engineering and Division of Quality and Environmental Management, Luleå University of Technology, 2006. http://epubl.ltu.se/1402-1544/2006/38/LTU-DT-0638-SE.pdf.
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