I denna studie undersöks hur faktorer som ledtid, kostnad och miljö påverkas av valet avverksamhetsform på avlägsna marknader. Även konsekvenser på produktionsstrategi,produktflöde och ekonomiska vinster undersöks. I studien görs fallstudier av svenska företagi länderna Japan och Kina för att undersöka hur företag väljer att etablera sig och arbeta påavlägsna marknader. Fallstudierna analyseras och diskuteras för att undersöka hur de valdafaktorerna påverkas. En rekommendation åt samarbetsföretaget presenteras därrekommendationen utgår från studiens slutsats. / This study examines how factors such as lead time, cost and environment are affected by thechoice of form of operation in remote markets. Also, the consequences on productionstrategy, product flow and economic gains are examined. In the study, case studies are carriedout at various swedish companies Japan and China to investigate how companies choose toestablish themselves and work in remote markets. The case studies are analyzed anddiscussed to examine how the selected factors are affected. A recommendation is presented tothe partner company where the recommendation is based on the study's conclusion.

Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2018-12-19T16:04:28Z No. of bitstreams: 1 Lúcia Adriana dos Santos Gruginskie_.pdf: 9867712 bytes, checksum: bfd43e9da7c12799c9184df87464cff6 (MD5) / Made available in DSpace on 2018-12-19T16:04:28Z (GMT). No. of bitstreams: 1 Lúcia Adriana dos Santos Gruginskie_.pdf: 9867712 bytes, checksum: bfd43e9da7c12799c9184df87464cff6 (MD5) Previous issue date: 2018-09-03 / Nenhuma / Os órgãos do Poder Judiciário, como exemplo de instituições públicas, são fundamentais para o desenvolvimento econômico e social. Porém, os principais problemas do judiciário brasileiro, apontados pelo Ministério da Justiça, são o alto número de processos em estoque, a falta de acesso à justiça e a morosidade, considerada como o principal aspecto da crise do judiciário. Neste sentido, esta tese propõe estruturar e comparar modelos de previsão de tempo de atravessamento processual de ações judiciais civis na justiça federal de 2a Instância, para servir de informação para as partes processuais e administração. O estudo foi realizado no Tribunal Regional Federal da 4a Região, com dados de processos cíveis baixados em 2017. Para tanto, foram comparados quatro modelos para o tempo de atravessamento. O primeiro modelo foi ajustado através de redes neurais para regressão com o uso do algoritmo retroalimentação, o segundo utilizou máquina de vetor suporte para regressão, através da biblioteca Libsvm. O desempenho destes dois modelos, calculados pela medida RMSE, foi comparado ao desempenho da aplicação de análise de sobrevivência, o terceiro modelo, considerada técnica habitual para análise de estudos quantitativos de tempo. A variável resposta usada foi o tempo em dias entre a autuação do processo no 2o Grau e a baixa, escolhida entre indicadores usados em trabalhos acadêmicos e por órgãos judiciais do Brasil e da Europa. O quarto modelo foi ajustado utilizando máquina de vetor suporte para classificação, através da biblioteca LIBSVM. A variável resposta para o ajuste deste modelo foi transformada em ordinal por meio da estratificação em faixas de tempo, o que permitiu o cálculo da medida acurácia para aferir o desempenho. As covariáveis usadas para os ajustes foram categóricas e estavam disponíveis no banco de dados do TRF. Após os ajustes, foram aplicadas regras de associação às faixas de tempo com o objetivo de encontrar as características dos processos mais lentos e morosos. Também foi analisada a viabilidade de estabelecer parâmetros de tempos razoáveis. Para utilização em previsões, sugere-se o modelo de classificação de faixa de tempo e para o estabelecimento de padrões, ou o modelo ajustado por redes neurais ou por máquina de vetor suporte. Entre as sugestões para trabalhos futuros estão a construção de uma tábua de baixa de processos, análoga às tábuas atuariais de mortalidade, e o estabelecimento de padrões para considerar processos como morosos. / The Courts as an example of public institutions, are fundamental for the economic and social development. However, the main problems of the Brazilian judiciary, pointed out by the Ministry of Justice, are the high number of cases in stock, lack of access to justice and slowness, considered as the main aspect of the crisis of the judiciary. In this sense, this thesis proposes to structure and compare models of lead time of civil lawsuits in the federal court of second instance, to serve as information for the parties of lawsuit and the administration. The study was conducted at the Tribunal Regional Federal da 4a Região, with data from civil lawsuits termined in 2017. Four models for lead time lawsuits were compared. The first was fitted by neural network for regression with the backpropagation algorithm; the second model was fitted by using support vector machine for regression with the Libsvm library. The performance of these two models, calculated by the RMSE measurement, was compared to the performance of the survival analysis model, considered as the usual technique for the analysis of quantitative time studies. The dependent variable used was the time in days between the arraignment date and the case disposition date, chosen among indicators used in academic studies and by judicial Courts of Brazil and Europe. The fourth model was fitted using vector support machine for classification, using the Libsvm algorithm. The dependent variable was transformed into ordinal by means of the stratification in time bands, which allowed the calculation of the measurement as accuracy and precision. The independent variables were categorical and were available in the TRF database. After, rules of association were applied to the time bands in order to find the characteristics of the most frequent band and the more time consuming lawsuits. The feasibility of establishing parameters of reasonable times was also analyzed. The time-band classification model is suggest to use in forecasts and it can use the model adjusted by neural networks or by the support vector machine in use to establish standards of time. Among the suggestions for future work are the construction of a life tables of lawsuits, analogous to the actuarial tables, and the establishment of standards to consider reasonable lead time.

Today Scania give a high priority to the continuous improvements on the quality of their vehicles. To follow up the flaws in product quality, which are recognized by the repairs at the local workshops, material requests are carried through to be able to analyze the defects at the plant in Södertälje – in purpose to improve the product quality. The material requests are also carried through to compensate the workshop for their expenses and to check that they are working according to the company’s warranty manual. Due to local routines and different distribution structures at the different markets the lead times and the costs caused by the flow of material are hard to estimate. Furthermore the lead times are in many cases unjustified long, which imply that the information about quality problems reaches Scania at a late stage. The variations in lead times moreover results in problems with planning the activities. This study has, in the light of the background described above, aimed to map and analyze the lead times and costs which are caused by the flow of warranty material, from the company’s workshops to the plant in Södertälje. Based on the results of the analysis a range of alternative solutions also have been prepared in purpose to reduce the lead times in a cost efficient way. The mapping, which took place on the Swedish, German and Benelux markets, has mainly been carried out through visits at the workshops and the distributors at respective markets. Apart from the qualitative aspects in collected data the performance of the studied markets, in the form of costs and lead times, has been compiled and calculated. The observed characteristics were later on analyzed together with relevant logistics management theory to point out strengths and weaknesses with different solutions. Based on the mapping and the analysis the second part of the study could be completed, which aimed to formulate a range of recommendations. The recommendations, which are presented below, are principally formulated in correspondence with the priorities of Scania – namely to achieve high product quality and rapid information. <ol type="1">Improved and more concrete management at factory level. This can be achieved through clarified targets which include explicit measurements and directives towards all actors. Reduce the waiting time between activities. This can be achieved by a combination of incentives and demands on the distributors as well as on the workshops. Change the transport strategies. On the Benelux market the transport solutions are well designed and are therefore both cost effective and quite fast, which implies short lead times. On the Swedish market a consolidation of goods is proposed to decrease the delivery rate in Södertälje to just once a week. On the German market merged deliveries are proposed, the same transport that delivers spare parts to the workshop will through this recommendation also pick up the warranty material. The warranty material will in this solution also be merged in a collection point and thereafter be transported to the distributor once a week. Change the transport frequencies. The different markets will send in material on predefined days once a week, which will contribute to keep the lead times short and the quantities at a more manageable level. Even out the inflow of material to Södertälje and avoid handling in Building 220X, to reduce the problems with stress, mishandling and lack of recourses which occur because of the uneven inflow at the receiving area today. Clear information should in according to this be given to each market concerning for instance shipping date and quantities. Improve the integration of the information systems, to facilitate the spreading of information and administrative activities related to claims and material requests. This also implies that forecasting and management is facilitated.   Through the recommendations the lead time for the Swedish market is estimated to be reduced from 21 to 13 days, for the German market from 60 to 21 days and from 39 to 21 days for the Benelux-market. Apart from reduced lead times the more straight demands, incentives and improved routines will imply that the variations in lead times are reduced. Due to the changes according to the recommendations the costs will be reduced, both through the reduced lead times, which affect the capital costs, as well as more efficient structures that reduce the handling costs and the costs of transportation. / Scania lägger idag ner stor energi på att ständigt utveckla kvaliteten på de tillverkade fordonen. I avsikt att följa upp de kvalitetsbrister som uppdagas vid reparationer ute på företagets service­verkstäder genomförs materialhemtagningar för att centralt kunna analysera defekterna och utveckla kvaliteten, men också för att ersätta verkstädernas utlägg och kontrollera att de följer garantimanualens föreskrifter. Beroende på lokala rutiner och varierande upplägg av respektive marknads distributionsstruktur är de ledtider och kostnader som dessa materialflöden idag medför svåra att uppskatta. Ledtiderna är dessutom i många fall omotiverat långa vilket medför att informationen om kvalitetsbrister ankommer Scania sent. Dessutom medför variationerna i ledtiden att det blir svårt att planera verksamheten. Denna studie har utifrån ovanstående bakgrund avsett att kartlägga och analysera de ledtider och kostnader som uppstår i materialflödet av returmaterial, från Scanias serviceverkstäder via distributören till fabriken i Södertälje. Utifrån analysresultaten har alternativa lösningar utarbetats för att på ett kostnadseffektivt sätt reducera ledtiderna. Kartläggningen som skedde på marknaderna i Sverige, Tyskland och Benelux har huvudsakligen genomförts via besök hos distributörer och serviceverkstäder på respektive marknad och har sammanställts i ett empiriunderlag. Förutom de mer kvalitativa aspekterna i detta underlag har respektive marknads prestanda, i form av kostnader och ledtider, sammanställts och beräknats. De observerade egenskaperna på de studerade marknaderna kunde tillsammans med relevant teori analyseras för att påvisa styrkor och svagheter med olika upplägg och lösningar. Utifrån kartläggning och analys kunde studiens andra del fullbordas, vilken avsåg att ta fram rekommendationer för åtgärder som medförde ett kostnadseffektivare upplägg och samtidigt reducerade ledtider. Rekommendationerna som nedan presenteras har utgått från de prioriteringar som gjordes i analysen, vilka huvudsakligen utgår från Scanias strävan efter hög produktkvalitet och snabb information, vilket indirekt implicerar korta ledtider. <ol type="1">Förbättrad styrning/mätning från fabrik, genom formulering av tydliga målsättningar från fabrik centralt, vilket omfattar definiering av explicita mätpunkter och kommunikation av tydliga krav och incitament gentemot övriga aktörer. Minska väntetiden mellan aktiviteterna, genom att införa krav och/eller incitament, enligt resonemanget ovan, gentemot serviceverkstäder och distributörer. Detta ökar prioriteten samtidigt som utformandet av bättre rutiner stimuleras. Förändra flödesvägar och transportstrategier. För Benelux-marknaden bedöms de befintliga transportstrategierna fungera bra då de är både kostnadseffektiva och samtidigt medför korta ledtider. På den svenska marknaden kan efter analys konstateras att dagens lösning är ett fullgott alternativ, men för att undvika de ojämna inleveranserna rekommenderas att en konsolidering av godset genomförs för vidare inleverans en gång per vecka. För den tyska marknaden föreslås samleveranser, så kallade mjölkrundor, i samband med reservdelsleveranserna som levererar godset till ett antal uppsamlingsplatser. Från uppsamlingsplatserna bör godset skickas till distributören som efter besiktning levererar godset vidare till Södertälje. Förändra transportfrekvenserna, in till fabrik till en gång per vecka för samtliga marknader för att samla ihop hanterbara mängder från marknaden och samtidigt hålla ledtiden nere. Jämna ut inflödet till Södertälje och undvik hantering i byggnad 220X, för att minska problemen med stress, felhantering och resursbrist som uppstår i och med dagens ojämna flöde vid ankomstmottagningen i byggnad 280. Tydliga besked bör här ges till respektive marknad om exempelvis vilka avskeppningsdatum och vilken information som efterfrågas. Förbättra systemstödet, för att underlätta informationsspridning och administrativa aktiviteter relaterade till reklamationer och materialhemtagningar, vilket också innebär att endast önskat material tas hem och prognostisering och styrning underlättas.   Genom de föreslagna åtgärderna har ledtiderna för Sverige beräknats minska från 21 till 13 dagar, för Tyskland från 60 till 21 dagar och för Benelux från 39 till 21 dagar. Förutom kortare ledtider innebär tydligare krav och incitament tillsammans med förbättrade rutiner att variationerna i ledtiderna minskar. Baserat på de utarbetade rekommendationerna minskar också kostnaderna både genom minskade ledtider, vilket påverkar lagerföringskostnaderna, och genom effektivare upplägg som minskar lagerhållningskostnaderna och transportkostnaderna.

ITAB Shop Concept är ett multinationellt företag som utvecklar, tillverkar, säljer samt installerar inredningskoncept och produkter till butikskedjor. En del av denna produktion innefattar tillverkning av kassadiskar, vilka består av komplexa produktstrukturer med hundratals ingående komponenter. På grund av att ITAB upplevde att komponenter saknades vid start av kassadiskmontaget, gavs uppdraget att undersöka orsakerna till detta. Studiens syfte var att kartlägga och analysera orsaker till störningar i ledtider som påverkar tillgängligheten på komponenter till monteringsavdelningen på ITAB Shop Concept Jönköping samt ge rekommendationer. Produktionen av kassadiskar var helt kundorderstyrd och produktionsplanering skedde med hjälp av affärssystemet Jeeves Universal. Metoden som användes var materialbehovsplanering, vilket innebär att planeringen av tillverkning och inköp baseras på kassadiskarnas produktstrukturer, lagersaldon och ledtider. ITAB producerade mellan 50-60 kassadiskar vid högsäsong och mellan 30-40 stycken vid lågsäsong. Vid insamlingen av dataunderlaget undersöktes tillverkningsorder som inte var startklara vid planerat startdatum. Detta gjordes genom daglig mätning, där samtliga tillverkningsorder inspekterades för att utläsa vilka komponenter som hade brist mot lager. Mätningarna visade att egenproducerade komponenter utgjorde drygt hälften av bristerna medan inköpta utgjorde ungefär en femtedel. Resterande brister berodde på så kallade fästelement, vilket är ett samlingsnamn för bland annat skruvar och muttrar. Dessa komponenter är lågvärdesartiklar och med hjälp av en bättre styrningsmetod skulle detta problemet kunna reduceras. Bättre rutiner för snabbinventering skulle behöva införas för att förhindra att minussaldon uppstår. Detta gäller inte enbart fästelement utan för samtliga artiklar i produktionen. För egenproducerade komponenter identifierades i vilka produktionsgrupper en störning i ledtiden först uppstod. För sex av dessa studerades rutinerna mer djupgående för att utreda varför störningar hade uppstått. De problem som identifierades var bland annat bristande rapporteringar och att data i Jeeves inte överensstämde med verkligheten. För två av produktionsgrupperna var den utförda arbetstiden mer än 50 respektive 80 procent längre än planerad. Detta medförde att planerad beläggning inte var tillförlitlig och operatörerna i dessa produktionsgrupper hade svårt att hinna med. För att förbättra detta och få en bättre planering bör regelbunden uppdatering av ställ- och stycktider utföras. Mätningarna visade även på tydliga felaktigheter mellan verkliga lagersaldon och de registrerade i Jeeves. En av anledningarna till detta var bristande rutiner vid kassationer. Då en kassation uppstod rapporterade operatören detta, men det kunde ta lång tid innan det noterades av produktionsplanerna på grund av hur planeringen i affärssystemet var uppbyggt. Eftersom produktionen var direkt kundorderstyrd innebar en kassation att en ny akut tillverkningsorder behövde släppas. Därför är det viktigt att dessa tidigt behandlas för att inte brist ska uppstå. Efter att en akutorder har släppts är det även viktigt att denna prioriteras i produktionen, vilket gjordes genom att produktionsledarna lämnade ut en lista till berörda produktionsgrupper. Detta skulle istället kunna göras med hjälp av Jeeves, eftersom systemet är försett med möjligheten att använda prioriteringskoder. Ett annat problem som identifierades i ett par produktionsgrupper var att körplanen som Jeeves utformat inte följdes. För plockning av material användes istället en lista baserad på när kundorder skulle vara klara. Detta medförde att material plockades samtidigt till monteringen och lackeringen, trots att lackering utförs innan montering. Därför bör truckförarna för kassadiskplocket följa körplanen för att säkerställa att material har plockats fram i rätt tidpunkt till respektive operation. För en av produktionsgrupperna var det svårt att följa körplanen och för att lösa detta behöver bättre förståelse för andras arbetsrutiner utvecklas hos personalen. Genom ett bättre samarbete mellan och inom produktionsgrupperna skulle det vara enklare för vissa produktionsgrupper att genomföra sitt arbete. För inköpta komponenter är det många variabler som påverkar och de problem som datainsamlingen påvisade var att inleveranser ofta blev stående i godsmottagningen. Detta medförde att materialet inte blev tillgängligt i affärssystemet även om det fysiskt fanns tillgängligt i produktionsanläggningen. En annan observation som gjordes var att material ofta beställdes till samma dag som det skulle användas i produktionen. Detta innebar att materialet behövde levereras i rätt tid från leverantörerna för att inte brist skulle uppstå. Eftersom ledtiderna för anskaffning av material var korta ställs större krav, något som inte återspeglades tillbaka på leverantörerna. Utifrån studiens resultat blev det tydligt att ITAB behöver fokusera mer på tillgänglighet av material. Därför kan det vara av intresse att undersöka huruvida det är ett felaktigt fokus i produktionen. Genom ITABs fokusering på leveransprecision och slutdatum uppstod suboptimering och operatörerna hade ingen helhetsuppfattning över tillgänglighet. Därför är det rimligt att fokusering på tillgänglighet och startdatum istället skulle skapa bättre balans i produktionen, vilket skulle kunna leda till ökad produktivitet. / ITAB Shop Concept is a multinational company that develops, manufactures, sells and installs interior design concepts and products to retail chain stores. A part of this production includes manufacturing of checkouts, which have complex product structures with hundreds of components. This thesis came to because ITAB experienced that components were missing at the start of the checkout assembly. The purpose of this thesis was to identify and analyze the causes of lead-time deviations that affect the availability of components to the assembly section at ITAB Shop Concept in Jönköping and give recommendations. The production of checkouts was completely customer-driven and the production planning was done with the ERP-system Jeeves Universal. The method used was material requirements planning, which base the production planning for purchasing and self-production on the product structures of the checkouts and also on inventory levels and lead times. ITAB produced between 50-60 checkouts at peak season and 30-40 in the off-season. To collect data material, every manufacturing order, which wasn’t ready to the planned start, was examined. This was done by making daily measurements, where all manufacturing orders were inspected to deduce which components had a shortage of stock. The measurements showed that self-produced components contributed to slightly more than half of the shortages while purchased components constituted of approximately one-fifth. The remaining shortages were due to screws and brackets. These components are low-cost products and by using a better inventory control method, the risk of shortages for these could be reduced. Better procedures for rapid update of inventory would also be necessary in order to prevent the occurrence of negative inventory balance. This applies not only to screws and brackets but for all components in the production. For self-produced components, production groups could be identified where a disturbance in lead-time first emerged. For six of these, routines where examined in more detail to investigate why the disturbance had occurred. The problems that were identified were for instance lack of reporting and that the data in Jeeves didn’t correspond to the reality. For two of the production groups, the reported work time was more than 50 percent and 80 percent longer than planned. This meant that scheduled availability was unreliable and the operators of these production groups had a hard time keeping up. To improve this and get a better production plan, planned work time and setup time should be regularly updated. The measurements also showed clear errors between actual inventory levels and the levels registered in Jeeves. One reason for this was found to be inadequate procedures for wasting. When wastage occurred, the operator reported this but then it could take a while before the production planner noted this because of how the planning was structured in the ERP-system. Since production was directly customer-driven, a new urgent manufacturing order had to be released. Therefore it’s important that these cases are noted early to avoid that shortages occur. When an urgent manufacturing order has been released, it’s also important that this order is prioritized within the production. At the time of this thesis, this was done by the production managers who gave out a list of urgent orders to the production groups. This could instead be performed with the help of Jeeves, as the system already is equipped with the ability to use priority codes. Another problem that was identified in a few productions groups was that the dispatch list that Jeeves generated wasn’t followed. Instead the operators in charge of transporting components to the assembly section and painting area used a list based on the orders completion date. This meant that the components were delivered at the same time to both these production groups, even though the painting should be done before the assembly takes place. Therefore, truck drivers for checkout components should follow the dispatch list in order to make sure that materials are transported to the correct operation at the correct time. Although, for one of the operations, it would be difficult to follow the dispatch list because many orders are combined. To solve this, personnel need to have better understanding of each other’s work routines. Through better collaborations between and within the productions groups, a better work situation could evolve. For purchase components, there are many variables that influence and one of the problems that were identified was that deliveries often were left standing in the receiving area. This meant that the material wasn’t available in the ERP-system even though the material was available within the production plant. Another observation that was made was that materials often were ordered to the same day it would be used in the production. This meant that the material had to be delivered on time from suppliers in order to avoid that shortages would occur. Given that the lead times for procurement of materials were short, it requires higher demands. These demands were not reflected back to the suppliers, which should be the case. Based on the results of this study, it became clear that ITAB has to focus more on the availability of materials. Therefore, it may be of interest to investigate whether right focus is used or not. While ITAB is focusing on delivery precision and completion dates, the operations were sub-optimized and the operators didn’t have a whole view of the material flow. It is therefore reasonable to believe that focus on availability and start date instead would create a better balance in the material flow, which could lead to increased productivity.

Timing of ordering of inventory items is of very great importance in Materials Requirement Planning. Uncertainties in timing can have an adverse effect on the system performance. Most often the lead time variation contribute to timing uncertainties; and their effects are reflected in added costs. Lead time error effects are investigated in this thesis. The study attempts to estimate the effects through some relevant costs, and their variations across the lot sizing rules. The hypotheses for this study are 1) Between any two lot sizing rules, there will be a significant difference in error coats due to combined effect of purchased lead time error and manufacturing lead time errors; 2) Relative cost performance of lot sizing rules in MRP is influenced by the lead time errors; 3) There will be a difference in error cost between lot for l o t rule and least total cost rule even with single source of lead time variation. To carry out the study a MRP programme was developed, in FORTRAN 77 with provisions to include the lot sizing rules while exploding the structure. The lot sizing rules used in the study are Lot for Lot, Silver and Meal heuristics, Wagner-Whitin algorithm, Least total cost, Least unit cost and Part Period balancing. A simulation model is developed using GPSS/PC, to test the hypotheses. An hypothetical production situation with three end items, each with a different product structure is designed. In addition, a master production schedule and a job shop are also structured. Appropriate distributions are assumed for both manufacturing lead times and purchase lead times. These provide the stochastic variables in the simulation experiments. A series of experiments were carried out with the model to investigate into the variations of costs amongst lot sizing rules. Results of the simulation experiments prove that there are costs associated with lead time errors in MRP. These error costs vary significantly with different lot sizing rules. It is also found that the resultant error costs vary significantly even with a single source of lead time variation. Least unit cost rule gives the beat performance having least error costs. Lot for Lot rule has shown the worst performance amongst the lot sizing rules considered. Other interesting results have emerged out of the study.

<p>Today Scania give a high priority to the continuous improvements on the quality of their vehicles. To follow up the flaws in product quality, which are recognized by the repairs at the local workshops, material requests are carried through to be able to analyze the defects at the plant in Södertälje – in purpose to improve the product quality. The material requests are also carried through to compensate the workshop for their expenses and to check that they are working according to the company’s warranty manual.</p><p>Due to local routines and different distribution structures at the different markets the lead times and the costs caused by the flow of material are hard to estimate. Furthermore the lead times are in many cases unjustified long, which imply that the information about quality problems reaches Scania at a late stage. The variations in lead times moreover results in problems with planning the activities.</p><p>This study has, in the light of the background described above, aimed to map and analyze the lead times and costs which are caused by the flow of warranty material, from the company’s workshops to the plant in Södertälje. Based on the results of the analysis a range of alternative solutions also have been prepared in purpose to reduce the lead times in a cost efficient way.</p><p>The mapping, which took place on the Swedish, German and Benelux markets, has mainly been carried out through visits at the workshops and the distributors at respective markets. Apart from the qualitative aspects in collected data the performance of the studied markets, in the form of costs and lead times, has been compiled and calculated. The observed characteristics were later on analyzed together with relevant logistics management theory to point out strengths and weaknesses with different solutions.</p><p>Based on the mapping and the analysis the second part of the study could be completed, which aimed to formulate a range of recommendations. The recommendations, which are presented below, are principally formulated in correspondence with the priorities of Scania – namely to achieve high product quality and rapid information.</p><ol type="1"><li><strong>Improved and more concrete management at factory level.</strong> This can be achieved<strong> </strong>through clarified targets which include explicit measurements and directives towards all actors.</li><li><strong>Reduce the waiting time between activities. </strong>This can be achieved by a combination of incentives and demands on the distributors as well as on the workshops. <strong></strong></li><li><strong>Change the transport strategies. </strong>On the Benelux market the transport solutions are well designed and are therefore both cost effective and quite fast, which implies short lead times. On the Swedish market a consolidation of goods is proposed to decrease the delivery rate in Södertälje to just once a week. On the German market merged deliveries are proposed, the same transport that delivers spare parts to the workshop will through this recommendation also pick up the warranty material. The warranty material will in this solution also be merged in a collection point and thereafter be transported to the distributor once a week.<strong></strong></li><li><strong>Change the transport frequencies. </strong>The different markets will send in material on predefined days once a week, which will contribute to keep the lead times short and the quantities at a more manageable level.<strong></strong></li><li><strong>Even out the inflow of material to Södertälje and avoid handling in Building 220X,</strong> to reduce the problems with stress, mishandling and lack of recourses which occur because of the uneven inflow at the receiving area today. Clear information should in according to this be given to each market concerning for instance shipping date and quantities.<strong></strong></li><li><strong>Improve the integration of the information systems,</strong> to facilitate the spreading of information and administrative activities related to claims and material requests. This also implies that forecasting and management is facilitated.<strong></strong></li></ol><p> </p><p>Through the recommendations the lead time for the Swedish market is estimated to be reduced from 21 to 13 days, for the German market from 60 to 21 days and from 39 to 21 days for the Benelux-market. Apart from reduced lead times the more straight demands, incentives and improved routines will imply that the variations in lead times are reduced.</p><p>Due to the changes according to the recommendations the costs will be reduced, both through the reduced lead times, which affect the capital costs, as well as more efficient structures that reduce the handling costs and the costs of transportation.</p> / <p>Scania lägger idag ner stor energi på att ständigt utveckla kvaliteten på de tillverkade fordonen. I avsikt att följa upp de kvalitetsbrister som uppdagas vid reparationer ute på företagets service­verkstäder genomförs materialhemtagningar för att centralt kunna analysera defekterna och utveckla kvaliteten, men också för att ersätta verkstädernas utlägg och kontrollera att de följer garantimanualens föreskrifter.</p><p>Beroende på lokala rutiner och varierande upplägg av respektive marknads distributionsstruktur är de ledtider och kostnader som dessa materialflöden idag medför svåra att uppskatta. Ledtiderna är dessutom i många fall omotiverat långa vilket medför att informationen om kvalitetsbrister ankommer Scania sent. Dessutom medför variationerna i ledtiden att det blir svårt att planera verksamheten.</p><p>Denna studie har utifrån ovanstående bakgrund avsett att kartlägga och analysera de ledtider och kostnader som uppstår i materialflödet av returmaterial, från Scanias serviceverkstäder via distributören till fabriken i Södertälje. Utifrån analysresultaten har alternativa lösningar utarbetats för att på ett kostnadseffektivt sätt reducera ledtiderna.</p><p>Kartläggningen som skedde på marknaderna i Sverige, Tyskland och Benelux har huvudsakligen genomförts via besök hos distributörer och serviceverkstäder på respektive marknad och har sammanställts i ett empiriunderlag. Förutom de mer kvalitativa aspekterna i detta underlag har respektive marknads prestanda, i form av kostnader och ledtider, sammanställts och beräknats. De observerade egenskaperna på de studerade marknaderna kunde tillsammans med relevant teori analyseras för att påvisa styrkor och svagheter med olika upplägg och lösningar.</p><p>Utifrån kartläggning och analys kunde studiens andra del fullbordas, vilken avsåg att ta fram rekommendationer för åtgärder som medförde ett kostnadseffektivare upplägg och samtidigt reducerade ledtider. Rekommendationerna som nedan presenteras har utgått från de prioriteringar som gjordes i analysen, vilka huvudsakligen utgår från Scanias strävan efter hög produktkvalitet och snabb information, vilket indirekt implicerar korta ledtider.</p><ol type="1"><li><strong>Förbättrad styrning/mätning från fabrik</strong>, genom formulering av tydliga målsättningar från fabrik centralt, vilket omfattar definiering av explicita mätpunkter och kommunikation av tydliga krav och incitament gentemot övriga aktörer. </li><li><strong>Minska väntetiden mellan aktiviteterna</strong>, genom att införa krav och/eller incitament, enligt resonemanget ovan, gentemot serviceverkstäder och distributörer. Detta ökar prioriteten samtidigt som utformandet av bättre rutiner stimuleras.</li><li><strong>Förändra flödesvägar och transportstrategier.<em> </em></strong>För Benelux-marknaden bedöms de befintliga transportstrategierna fungera bra då de är både kostnadseffektiva och samtidigt medför korta ledtider. På den svenska marknaden kan efter analys konstateras att dagens lösning är ett fullgott alternativ, men för att undvika de ojämna inleveranserna rekommenderas att en konsolidering av godset genomförs för vidare inleverans en gång per vecka. För den tyska marknaden föreslås samleveranser, så kallade mjölkrundor, i samband med reservdelsleveranserna som levererar godset till ett antal uppsamlingsplatser. Från uppsamlingsplatserna bör godset skickas till distributören som efter besiktning levererar godset vidare till Södertälje.</li><li><strong>Förändra transportfrekvenserna,</strong><em> </em>in till fabrik till en gång per vecka för samtliga marknader för att samla ihop hanterbara mängder från marknaden och samtidigt hålla ledtiden nere. </li><li><strong>Jämna ut inflödet till Södertälje och undvik hantering i byggnad 220X,</strong><em> </em>för att minska problemen med stress, felhantering och resursbrist som uppstår i och med dagens ojämna flöde vid ankomstmottagningen i byggnad 280. Tydliga besked bör här ges till respektive marknad om exempelvis vilka avskeppningsdatum och vilken information som efterfrågas. </li><li><strong>Förbättra systemstödet,</strong> för att underlätta informationsspridning och administrativa aktiviteter relaterade till reklamationer och materialhemtagningar, vilket också innebär att endast önskat material tas hem och prognostisering och styrning underlättas. </li></ol><p> </p><p>Genom de föreslagna åtgärderna har ledtiderna för Sverige beräknats minska från 21 till 13 dagar, för Tyskland från 60 till 21 dagar och för Benelux från 39 till 21 dagar. Förutom kortare ledtider innebär tydligare krav och incitament tillsammans med förbättrade rutiner att variationerna i ledtiderna minskar.</p><p>Baserat på de utarbetade rekommendationerna minskar också kostnaderna både genom minskade ledtider, vilket påverkar lagerföringskostnaderna, och genom effektivare upplägg som minskar lagerhållningskostnaderna och transportkostnaderna.</p>

This study focused upon the manufacturing lead time management in California's electrical and electronic machinery, equipment, and supplies industry. Manufacturing firms with one hundred or more employees were invited to participate in the research. Six subproblems relating to manufacturing lead time were selected and six appropriate null hypotheses were tested. The subproblems identified (1) factors influencing manufacturing lead time, (2) production planning processes influencing manufacturing lead time accuracy, and (3) techniques reducing manufacturing lead time. These factors, production planning processes, and techniques were then IV investigated to determine the importance of each of them in two environments: (1) high-volume continuous-production (HVCP) and (2) job-shop production-to-order (JSPTO).

Till följd av ökande krav från kunder blir dagens konkurrenssituation på marknaden allt hårdare för företag. Dessa krav bidrar till att företagen måste satsa på ökad effektivitet och långsiktig lönsamhet. Lean är ett känt begrepp inom industrin som vid implementering syftar till att reducerar eller eliminera slöseri i informations- och materialflöden vilket leder till effektivisering. Denna studie bygger på ett problem som existerar i ett flertal informations- och materialflöden i en processindustri. Fallföretaget i denna studie är Iggesund Paperboard som önskar klarhet angående flödena samt minskade ledtider och lagernivåer. Syftet med studien är att undersöka hur internt materialflöde samt beställning och prognostisering av material kan effektiviseras för att reducera ledtid och lagernivåer. Studien utfördes genom en fallstudie där datainsamling på fallföretaget samlades in genom intervjuer, observationer och dokumentstudier. Parallellt samlades information också in genom litteratur. Datainsamlingen utgjorde sedan underlag till analys och slutsatser för denna studie. Resultatet i form av kartläggningen av informations- och materialflöden visar på ett komplext flöde med många aktiviteter som bidrar till slöseri. Orsakerna till slöseri i flödena är varierande och bidrar till ökade ledtider och lagernivåer. Vid kartläggningen utformades två bilder med två värdeflöden i varje bild som tillsammans med förbättringsförslag kan skapa kontroll och minska ledtider och lagernivåer. Det vetenskapliga bidrag som denna studie frambringar är att utöka kunskapen inom dokumentering och analysering, samt tillämpning av lösningar baserade på filosofin inom Lean, för administrativa arbetsuppgifter. Bidraget är således att kombinera och utföra samma tillämpning på ett informations- och materialflöde i helhet och inte var för sig. Förslag till vidare forskning är att utföra undersökningen som gjort i studien under en längre tidsperiod samt i fler miljöer för att ge prov på ökad trovärdighet. / Companies meet tougher competition at the marketplace as a consequence of increasing customer demand. As a result they have to focus on increasing their efficiency and look for long-term profitability. Lean is a known concept within the world of industries that aims to reduces or eliminates waste in information- and material flows which will lead to effectiveness. The findings of his study are based on a problem within a process industry. The problem comprises information- and material flows where the company Iggesund Paper requests clarity in the flows, and reduced lead time and stock levels. The purpose with this study is to investigate how internal material flow, forecasting orders and ordering materials can be developed to be more efficient and reduce lead-time and stock levels. This study is carried out as a case-study where the data was collected through interviews, observations, document studies and literature review. The data collection gave a solid ground for further analysis and conclusions. The value stream mapping and the description of the information- and material flows indicates and identifies complexity and activities contributing to waste. This situation leads to increasing lead-times and stock levels. The cause of the situation is varied but with the maps of the flows and the improvement proposals improvements can be made and effectiveness can be achieved. The theoretical contribution of this study is to extend research and considering applying tools within the Lean philosophy on administrative work, and together with the same application on work with material flow this study combine the proposals of improvements for the entire process. Suggestions for further research are to extend the time of the field study and likewise apply the methods of the study in additional situations to extend the validity and reliability.

Submitted by Livia Mello (liviacmello@yahoo.com.br) on 2016-09-13T17:56:00Z No. of bitstreams: 1 DissFJGP.pdf: 3333112 bytes, checksum: 8963ce6444bcd4b9ef7bf9a0131996b6 (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-09-15T13:29:25Z (GMT) No. of bitstreams: 1 DissFJGP.pdf: 3333112 bytes, checksum: 8963ce6444bcd4b9ef7bf9a0131996b6 (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-09-15T13:29:31Z (GMT) No. of bitstreams: 1 DissFJGP.pdf: 3333112 bytes, checksum: 8963ce6444bcd4b9ef7bf9a0131996b6 (MD5) / Made available in DSpace on 2016-09-15T13:29:38Z (GMT). No. of bitstreams: 1 DissFJGP.pdf: 3333112 bytes, checksum: 8963ce6444bcd4b9ef7bf9a0131996b6 (MD5) Previous issue date: 2016-01-29 / Outra / Operations Management Researchers have largely studied and analyzed Lean Manufacturing (LM), by its capacity of productivity improvement in industry. Even so, this approach has found several difficulties to deal with all production types, especially those that have high-variety and low-volume. Therefore, LM has been integrated with other approaches to maximize its action, like Quick Response Manufacturing (QRM). However, few researchers have studied the integration of LM and QRM. In the aim of solving this gap, this research studies how QRM complements LM in high-variety production, in order to extend improvements with the integration of the two approaches. This research used multiple case study method to determine the behavior of the two approaches inside high-variety production. Two companies were analyzed, where the approaches supplied some improvement proposals to find complimentary elements. Data were collected throughout interviews, document analyzes and observation. As main result, QRM inserts concepts of System Dynamics as a compliment of Lean. Thus, tools as simulation, lead-time treatment, and analysis of utilization are the easiest for incorporation in the opportunities of improvement. A tool proposed based in unification of Value Stream Map (VSM) and Manufacturing Critical-Path Time (MCT) detects waste using the approaches, optimizing them. Future research should focus on using the integration proposed, verifying if compliments are successful in other flow and type production. / A abordagem Lean Manufacturing (LM) e as suas técnicas foram amplamente estudadas e analisadas por pesquisadores da área de planejamento da produção pela capacidade de melhoria de produtividade da indústria. Mesmo assim, tal abordagem tem encontrado diversas dificuldades para tratar todos os ambientes produtivos, especialmente àqueles que têm alta variedade de produtos e baixo volume. Portanto, ela vem sendo integrada com outras abordagens para potencializar a sua ação, como o Quick Response Manufacturing (QRM). Porém, a integração do LM com o QRM tem sido pouco estudada. Com o objetivo de preencher esta lacuna, esta pesquisa aborda como o QRM complementa o LM em ambientes de alta variedade, a fim de ampliar os efeitos de melhoria das duas abordagens em conjunto. Para isto, a pesquisa adotou o estudo de caso múltiplo com objetivo de determinar o comportamento das duas abordagens dentro do contexto de alta variedade. Foram analisadas duas organizações em que as abordagens fornecessem propostas de melhorias para encontrar elementos complementares entre elas. Os dados foram coletados através de entrevistas, análise documental e observações diretas nos casos. Como resultado encontrou-se que o QRM complementa o LM na inserção da dinâmica de sistemas. Com isso, ferramentas como simulação, tratamento de lead time, e análise de utilização são mais fáceis de incorporar nas oportunidades de melhoria. A unificação entre o Mapeamento do Fluxo de Valor (MFV) e Manufacturing Critical-Path Time (MCT) consegue detectar desperdícios utilizando as abordagens em conjunto, potencializando-as para mais aplicações. Para futuras pesquisas, sugere-se focar na utilização do modelo integrado proposto, verificando se as áreas de complementaridade são as mesmas em outros tipos de ambientes e fluxos.

Lean production is one of the proven approaches for identifying and eliminating the activities that do not add value to the customers and delivering and provide the best possible quality service to customers. Implementation of lean is deemed to be feasible in any organization regardless of its size or industry background. For initiating lean in an organization there are many tools, techniques and approaches that are available. Value Stream Mapping (VSM) is one such tool that is touted as cost-effective and easy to be implemented. This thesis proposes to conduct Value Stream Analysis (VSA) at at e-commerce (online) department at the case company to understand their material and information flows by analyzing the current state and develop implementable solutions to improve the overall productivity of the online deliveries. The tasks to perform are: · To map the current state value stream. · To identify wastages and propose solutions to eliminate them. · To provide productivity improvement proposals. A mix of quantitative and qualitative methods were used in this study for data collection and data analysis. This project, which is designed as a longitudinal case study that pri-marily focuses on gathering accurate, real-time data related to the product family, and on drawing a visual representation of the current materials and information flow. VSM has been implemented and the data were analysed. The results obtained from this study concludes that, VSM is an appropriate technique to initiate lean ways of work in larger firms that lacks sufficient knowledge and experience on lean. In addition to it, produc-tivity improvement proposals provided in this study are considered to be key factors in initiating lean transformation in an organization from a technical point of view while, management support and acceptance of change is necessary from an organizational point of view. This thesis will be useful to researchers, professionals and others con-cerned subject to understand the significance of value stream mapping in larger e-com-merce logistic firms.