Dissertations / Theses on the topic 'Pareto chart'

Statistical process control (SPC) which includes very powerful techniques used in other mature engineering disciplines for providing process control is not used by many software organizations. In software engineering domain, SPC is currently utilized only by organizations which have high maturity levels according to the process improvement models like CMM, ISO/IEC 15504 and CMMI. Guidelines and software tools to implement SPC techniques should be developed for effective use and dissemination of SPC especially for low maturity organizations. In this thesis, a software tool (SPC-AAT) which we developed to assess the suitability of software processes and metrics for SPC and use of SPC tools is presented. With SPC-AAT, we aim to ease and enhance application of SPC especially for emergent and low maturity organizations. Control charts, histograms, bar charts and pareto charts are the supported SPC tools for this purpose. We also explained the validation of the tool over two processes of a software organization in three case studies.

This diploma thesis deals with application of quality tools in production plant. Theoretical part deal with history of quality, current situation in quality management and describe some of quality tools. In practical part will be applied some of described quality tools. Some of them are already implemented in production but only partially and they are not used in full for more flexible and efficient production. Conclusions and results of this diploma thesis should prove that if we are using these tools in full, we can decrease extra cost in production.

This diploma thesis is engaged in a system design, which is created to be used for warranty claims data collection. The issue of the second part of this document is the implementation of the system and the description of the next analyse for warranty claims costs minimalisation.

This thesis aims at securing the quality of components from AP&T’s suppliers and to get a picture of different suppliers’ processes. In this thesis, samples supplied by various AP&T suppliers where measured at AP&T to gather data on how well the parts met design specifications. The collected data were analyzed using histogram and stratification. Further analysis was done using pareto chart and capability indices. Only the critical dimensions identified from the pareto chart together with discussions with experts on the shop floor were further analyzed using capability indices. This was done to focus more on the critical dimensions which needed more attention. The findings were critically studied and suggestions were made which served as a fundamental base for supplier product quality improvement plan at AP&T. However, there was no direct contact with the supplier process to ascertain its being in control; therefore, product characterization was carried out. In this case, all the results obtained from the analyses only gave a momentary picture of the process. Therefore, the results can not be used for future predictions.In the analysis, special attention was laid on the shape, spread and centering of the histogram. Studies were also done on the significant few; got from the pareto chart. Use was made of capability indices to get the momentary fall-outs of ppm and the percentage of the specification band used up by the process.
Uppsatsnivå: D

The objective of this thesis is cost analysis in XYZ CZ s.r.o. with aims of reducing warranty costs and improve product quality. The introduction describes fundamental quality management systems from which I have selected data to be analyzed and propose the most appropriate solution. Then I conducted AS-IS analyze of the company XYZ CZ s.r.o., a description of the current situation in the company and a cost analysis. The data obtained from the cost analysis I processed with the help of quality tools and their evaluation was carried out, which was followed by the design of the solution. In conclusion, I conducted a technical - economic evaluation of the results achieved.

This thesis is dealing with the issue of risk management during order processing in manufacturing company, which is focused on textile production. Introduction of thesis is presenting theroretical basis. Practical part of the thesis is dealing with company introduction organizational structure of the body, product range, order progressing, OSH policy and environmental policy. Tools chosen for risk assessment techniques - analysis of the causes and consequences (Ishikawa diagram), analysis of possible errors and their consequences (FMEA) and the Pareto chart. The thesis aims to analyze the risks and for the most significant risks to process proposals for their elimination.

El presente trabajo se enfoca en la mejora de la calidad concerniente a los elementos estructurales de un centro comercial, a efectos de reducir y minimizar las No Conformidades más relevantes que se presentaron en obra. El proyecto se basó en la construcción y ampliación de locatarios de un centro comercial que tendrá como fin su alquiler. Mediante la aplicación del Análisis Causa Raíz y con las herramientas de diagrama de Ishikawa y diagrama de Pareto, se pudo encontrar las posibles causas del incumplimiento de la calidad en los elementos estructurales, las que subsecuente se validaron a fin de determinar acciones correctivas. En el primer capítulo se señala el planteamiento del problema, problemas principales, secundarios, justificación del estudio, limitación y los objetivos generales y específicos. En el Segundo Capitulo se señala el marco teórico, donde menciona la calidad en el Perú, la gestión de la calidad total, los costos de la calidad en la construcción, ingeniería de la calidad y definiciones. En el tercer capítulo se indica la utilización del Análisis Causa Raíz, las herramientas Diagrama Causa Efecto y Diagrama de Pareto. En el cuarto capítulo, se presenta el desarrollo del análisis de causa raíz mediante una secuencia de pasos. En el quinto capítulo, La Evaluación Económica, Presupuesto de obra, Costo de Reparación y Análisis del Gasto Incurrido. Finalmente, en el capítulo seis, se presentará las conclusiones y recomendaciones del presente trabajo.
This work focuses on quality improvement concerning the structural elements of a shopping center, in order to reduce and minimize the most relevant Non-Conformities that occurred on site. The project was based on the construction and expansion of tenants of a shopping center that will be rented as its purpose. By applying the Root Cause Analysis and using the Ishikawa diagram and Pareto diagram tools, it was possible to find the possible causes of quality noncompliance in the structural elements, which were subsequently validated in order to determine corrective actions. In the first chapter the problem statement, main and secondary problems, justification for the study, limitation and general and specific objectives are indicated. In the Second Chapter the theoretical framework is pointed out, where it mentions the quality in Peru, the total quality management, the costs of quality in construction, quality engineering and definitions. The third chapter indicates the use of Root Cause Analysis, the Cause Effect Diagram and Pareto Diagram tools. In the fourth chapter, the development of root cause analysis is presented using a sequence of steps. In the fifth chapter, The Economic Evaluation, Construction Budget, Repair Cost and Incurred Expense Analysis. Finally, in chapter six, the conclusions and recommendations of this work will be presented.
Trabajo de investigación

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Some organizations in the Brazilian forestry industry do not follow the development pace of other industries, or the adoption rate of management and quality methodologies and tools. As result, the low quality and high instability of processes create a lot of waste in the sector. This is intensified when it happens during the harvesting, one of the activities that most contributes to the production costs of a forestry business. This study aimed to evaluate the predictability of timber harvesting process based on critical points identified in the thinning and harvest operations. For this, research was divided in three stages. The first one was mapping the harvesting process and the elaboration of fluxograms. The second stage was the identification, through interviews, and assessment of critical points using the Failure Mode and Effect Analysis (FMEA) and Pareto chart. The third stage was the evaluation of the process using Statistical Process Control (SPC) through attributes and variable in the main failures. In the interviews conducted with workers, seven critical points were identified: damage to the remaining trees, sorting, stump height, dirt in load, knot on the second log, tree left in the field and safety. The evaluation with Pareto chart showed that 80% of the failures identified during harvest are attributed to three causes: damage to the remaining trees, sorting and stump height. The FMEA analysis showed that the failure with highest risk index was knots on the second log, followed by safety. For evaluation with the SPC, damage to remaining trees, sorting and stump height were selected. In general, control charts showed that the forest harvest process was considered unstable and unpredictable, even though it is within the limits defined by the company
No setor florestal brasileiro, algumas organizações não acompanham o ritmo do desenvolvimento de outros setores e da adoção de ferramentas e metodologias de gestão da qualidade. Em função deste atraso, a baixa qualidade e alta instabilidade dos processos, geram grandes desperdícios nas organizações. O fato se agrava quando ocorre na operação de colheita da madeira, uma das atividades que mais contribui nos custos de produção da empresa florestal. Este trabalho objetivou avaliar o processo de colheita florestal de uma empresa quanto a sua previsibilidade com base nos pontos críticos identificados nas operações de desbaste e corte raso. Para isso, a pesquisa foi dividida em três etapas, a primeira foi o mapeamento do processo de colheita e elaboração de fluxogramas. A segunda etapa foi a identificação, por meio de entrevistas, e avaliação dos pontos críticos utilizando a metodologia Failure Mode and Effect Analysis – FMEA e gráfico de Pareto. A terceira fase foi a avaliação do processo empregando o Controle Estatístico do Processo (CEP) por atributos e variáveis nas principais falhas. Nas entrevistas realizadas com os colaboradores, sete pontos críticos foram apontados: danos às árvores remanescentes, sortimento, altura de toco, sujeira na carga, nó na 2ª tora, árvores deixadas no talhão e segurança. Na avaliação com o gráfico de Pareto, observou-se que cerca de 80% dos problemas identificados na colheita da empresa são atribuídos às três primeiras causas supracitadas. A análise com o FMEA indicou que a falha com maior índice de risco foi o nó na 2ª tora, seguido da segurança. Para a avaliação com o CEP, selecionou-se os pontos críticos: danos às árvores remanescentes, sortimento e altura de toco. De maneira geral, os gráficos de controle indicaram que o processo da colheita florestal, apesar de estar dentro dos limites especificados pela empresa, foi considerado instável e não previsível

This thesis deals with the evaluation of the control system outputs in the production of fire car. In the first part of thesis is evaluated control system by company THT, Ltd.. The second, theoretical part, describes the seven basic quality tools, which represents tools for detection and analyzing of quality problems. In the third, practical part, is describes the proposed program, which serves as a simple tool for identification of the most frequent disagreements in the fire engines. In the final part is evaluated implementation of the proposed program in the company.

The aim of the diploma´s thesis is analysis of the scrap of the chosen process, using the tools of statistical process control and proposal of appropriate containment to reduce the scrap. The thesis describes all seven basic tools of quality and the greatest attention is aimed to Shewart's control charts. One chapter discusses three methods of problem solving in technical practice, while one of the described methods is used in the practical part of the thesis.

Magister Commercii - MCom
This research project focuses on the application of process improvement techniques in a clothing manufacturer to address delay problems in workflow in the factory. The objective of the research is threefold; investigate delays at the beginning of production and make suggestions, show the usefulness of continuous improvement techniques in improving activities in a clothing manufacturer and demonstrate how action research can be used in doing research in production and operation management. Using tools such as flow charts, check sheets, pareto analysis, fishbone diagrams, interviews and the "ask why five times" tool, an investigation into delays led to a second investigation into sewing defects. This established that these sewing defects are caused mainly by time constraints, the malfunctioning of machines, the wrong handling of garments, and previous operations. After an investigation using the above tools it was established that these defects could be addressed by setting realistic targets, doing regular maintenance on machines, cautioning operators to be more careful during their operations, and encouraging regular checks on garments before the next operation. The action learning methodology led to the following lessons; selecting a correct measuring tool is important, that not all tools need to be used, and that it takes time to do a research project using this method.

This diploma thesis deals with a Six Sigma method, about especially analysis defects of forms for tire production company Barum Continental. In the first, theoretic part, there is the Six Sigma method, improvement method and implementation into practice defined, and at last I attended to the tools of Six Sigma method, e. g. Control Charts, Regression analysis, Pareto analysis. In the second, practical part, there is the industrial process analyzed. Then I was introduced Barum Continental spol. s.r.o. concern, which data extended. Up to data processing I was used tools of Six Sigma method and also histogram.

This diploma thesis deals with the analysis of the risks during the executing of the loading tests of building constructions. The thesis focuses on the explanation of some of the terms in the field of risk management, the description of the individual types of loading tests of building constructions, the identification of the risks during the loading tests and their assessment. Analytical methods were used for assessing of the individual risks. Ishikawa diagrams were used for the basic identification of the risks. These risks were further assessed in the FMEA analysis and the results were filled in the Pareto charts. In conclusion of the practical part of the diploma thesis the HRA method was used for the more precise assessment of the human failure in the whole process of executing of the loading tests of building constructions.

The thesis deals with the analysis of quality management system in a selected organization and with tasks assigned by the organization's quality manager. The company is Aspera, spol. s r.o., specifically its metal manufacturing centre Aspera Technology in České Budějovice. The thesis is divided into a theoretical and a practical part. The theoretical part is based on study of scientific literature and focuses on quality definition, history of quality management, quality management system principles and concepts and quality management tools, especially process flowchart, Pareto diagram and FMEA. The practical part describes the company, its manufacturing centre and its quality management system. The next part deals with the three assigned tasks. First, designated company processes are described and visualized in the form of flowcharts. Second, weak points and risks of these processes are analysed using FMEA and corrective actions are recommended. Third, the most significant internal defects are identified using Pareto chart and cost analysis. At the end of the thesis some suggestions for improvement are provided. The suggestions were observed during an internship in the company and should enhance the quality management system and help the overall operation of the company processes.

У роботі розглядаються теоретичні аспекти: туризм є однією з найбільш динамічних галузей світової економіки. За оцінкою Всесвітньої туристичної організації (ВТО), туризм займає перше місце серед галузей світового господарського комплексу за обсягом експорту товарів і послуг. У сфері міжнародного туристичного обміну річний оборот складає понад 2 трлн. дол. США. На туризм припадає 12% загальносвітового національного продукту, 7% світових інвестицій. За валютними надходженнями туризм обійшов експорт нафтопродуктів, телекомунікаційного устаткування, автомобілебудування і всіх інших видів послуг. Дані 2014-2016 рр. свідчать про падіння попиту на послуги туризму з таких причин: економічна та політична нестабільність країни, високий рівень інфляції національної валюти, падіння платоспроможності населення, військові дії (ООС) на сході країни, анексія Криму. Ці загрози та ризики існують і тепер.
The paper considers theoretical aspects: tourism is one of the most dynamic branches of the world economy. According to the World Tourism Organization (WTO), tourism ranks first among the sectors of the world economic complex in terms of exports of goods and services. In the field of international tourist exchange, the annual turnover is over 2 trillion. dollars USA. Tourism accounts for 12% of the world's national product, 7% of world investment. By currency income tourism has bypassed the export of petroleum products, telecommunication equipment, automotive and all other types of services. The data for 2014-2016 indicate a fall in demand for tourism services for the following reasons: economic and political instability of the country, high inflation of the national currency, declining solvency of the population, military actions in the east, annexation of the Crimea. These threats and risks exist now.

Text in Afrikaans with summaries in Afrikaans and English
This study addresses the problem of the lack of an assessment model for the reception year that is theoretically grounded and can be implemented in practice by developing an outcomes-based assessment model. Assessment in an outcomes-based approach moves from an evaluative model to a model designed to appraise the learner's development and learning. Learners are assessed continuously and in an holistic manner by means of multiple methods that are part of the daily facilitation of learning. Following an introductory orientation (chapter 1), it is indicated that despite the radical transformation in education there are as yet few signs of any direct impact on assessment practices in the reception year. The importance of assessment in an outcomes-based model is firmly rooted in official policies but its implementation in practice is problematic. Assessment in the reception year is also complicated by problems in teaching practice. The unique nature of outcomes-based teaching is analysed in depth in chapter 2 in order to draw up theoretical guidelines on which to base the assessment model. The theoretical reflection in chapter 3 provides answers to the question: "Why should assessment take place?" The question is answered after considering the distinctive nature of and main reasons for reception year teaching. In an outcomes-based teaching approach it is particularly important to answer this question because assessment is more than simply evaluating the extent to which demarcated contents have been mastered. Chapter 4 explores authentic assessment methods that accommodate the unique nature of reception year teaching and an outcomes-based approach. Methods such as parent interviews, portfolios of learners' work and observation by means of incident records, checklists and participation charts are appropriate assessment methods. The points at which assessment information is collected and how it is interpreted and communicated are also examined. The proposed model, based on the theoretical findings, was presented to experts in the field of early childhood development for their input on its practical implementability. It was found that the model can be implemented in practice, provided in-service training is provided. The final chapter of the study consists of a summary, findings and recommendations regarding the practical implementation of the assessment model in the reception year.
Educational Studies
D.Ed. (Teacher Education)