Encontrados 14 documentos, a visualizar página 1 de 2
On the use of quality tools : a case study
Fernandes, Fábio; Sousa, Sérgio; Lopes, Isabel da SilvaOrganizations need to improve their processes to continually achieve customer satisfaction and, to do that in an effective and efficient way, should use quality tools. The main objective of this research project is to improve the level of quality through the use of quality tools in a company in the installation phase. The PDCA cycle is applied as a methodology to trigger the use of quality tools in problems sol...
Quantification of uncertainty of performance measures using graph theory
Lopes, Isabel da Silva; Sousa, Sérgio; Nunes, Eusébio P.In this paper, the graph theory is used to quantify the uncertainty generated in performance measures during the process of performance measurement. A graph is developed considering all the sources of uncertainty present in this process and their relationship. The permanent function of the matrix associated with the graph is used as the basis for determining an uncertainty index.
Data quality assessment in performance measurement
Sousa, Sérgio; Nunes, Eusébio P.; Lopes, Isabel da SilvaData quality is a multi-dimensional concept and this research will explore its impact in performance measurement systems. Despite the large numbers of publications on the design of performance measurement systems (PMSs) and the definition of critical success factors to develop Performance Measures (PMs), from the data user perspective there are possibilities of finding data quality problems, that may have a neg...
Diagnosis of quality problems in a footwear SME
Teixeira, Humberto N.; Lopes, Isabel da Silva; Sousa, SérgioThis article presents the results of a study conducted in a footwear SME. The study aimed to characterize the state of quality in the company highlighting weaknesses and areas for improvement. The methodology employed makes use of a set of tools for data collection and analysis such as interviews, flowcharts, process analysis diagrams, efects registry matrix, Failure Modes and Effects Analysis (FMEA) and cause...
Using Six Sigma to improve complaints handling
Abreu, Patrícia; Sousa, Sérgio; Lopes, Isabel da SilvaCurrently, companies are in increasingly competitive environment in which customers’ satisfaction and loyalty are vital factors in the success of any organisation. This requires the use of continuous improvement methodologies, such as Six Sigma, which enable companies to improve customer satisfaction and meet their expectations. This paper describes a case study carried out in a company from the automotive indu...
A maintenance prediction system using data mining techniques
Bastos, Pedro; Lopes, Isabel da Silva; Pires, LuísIn the last years we have assisted to several and deep changes in industrial companies, mainly due to market dynamics and the need to converge with a globalized and impatient world. These changes are transversal to the entire company also impacting on company maintenance function. In an attempt to eliminate faults and keep systems running without interruption, companies incorporated tools into their Information...
Diagnosis of quality problems in a small business
Teixeira, Humberto N.; Lopes, Isabel da Silva; Nunes, Eusébio P.This article presents the results of a study conducted in a small textile company. The study aimed to characterize the state of quality management in the company highlighting weaknesses and areas for improvement. The methodology employed makes use of a set of tools for data collection and analysis such as interviews, flowcharts, diagrams of process analysis, defects registry matrix, Failure Modes and Effects An...
Maintenance management based on organization maturity level
Oliveira, Marcelo M.; Lopes, Isabel da Silva; Figueiredo, DanielleThis article aims to discuss the management processes of the maintenance function of a company depending on the degree of maturity of the organization in connection with the maintenance, redefining training strategies, collection and analysis of failures, study and action plan to improve operational performance according to the organization's strategies. The maintenance management makes use of some tools and te...
Pattern sequencing models in cutting stock problems
Lopes, Isabel da SilvaTese de doutoramento em Engenharia Industrial e de Sistemas ; In this thesis, we address an optimization problem that appears in cutting stock operations research called the minimization of the maximum number of open stacks (MOSP) and we put forward a new integer programming formulation for the MOSP. By associating the duration of each stack with an interval of time, it is possible to use the rich theory that ...
Quality improvement practices adopted by industrial companies in Portugal
Lopes, Isabel da Silva; Nunes, Eusébio P.; Sousa, Sérgio; Esteves, DinaAbstract— In an increasingly competitive market, companies have the need to seek and implement best practices to continuously improve their processes. Recently, several quality management tools and quality improvement methodologies have emerged in literature. However, there is a gap between theory and practice. This study aims to assess to what extent the methodologies and tools cited in literature are used by ...
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