The provision of quality transport services is a prerequisite for the creation of an efficient organization that can meet the expectations and requirements of both the enterprise itself and its customers. From the railway enterprise's point of view, it is necessary to pay attention to the increasingly demanding requirements of its customers in railway passenger transport. This article focuses on identifying defects in rail transport processes that negatively affect ordinary operations. One of the most serious bottlenecks affecting railway transport reliability is the train delay, which fundamentally affects the perception of railway transport. At the same time, it emphasizes the need to apply individual tools according to the DMAIC cycle in order to achieve continuous improvement. The aim of the implemented Six Sigma methodology in railway enterprise is disciplined application of statistical problem-solving tools to recognize the gaps in the transport process and set out individual steps for their gradual removal.
Publishing, Zaltbommel. Hohnjec, M. (2009). Poznate metodologijo Six Sigma [Do you know the SixSigmamethodology], available from: http://www.vodja.net/index.php?blog=1&title=poznate-metodologijo-six-sigma&more=1&c=1&tb=1&pb=1 Ho, L. (2008a). How to use Six Sigma to Complement ITIL V3 , Available from: http://www.eweek.com/c/a/IT-Management/How-to-Use-Six-Sigma-to-Complement-ITIL-v3/ Ho, L. (2008b). Six-Sigma Techniques for IT Management , available from: http://www.eweek.com/c/a/IT-Management/Six-Sigma-Techniques-for-IT-Management/ Hsieh, C., Lin, B. & Manduca, B
Laboratories that are part of clinical centers are faced with the inevitability that their efficiency must be on a high level. Most of the biochemical laboratories are automated, but they are still underperforming. The best approach to increase the efficiency or to improve the processes today is the Lean Six Sigma methodology. This methodology extracts many benefits from automated processes. A lean process in the laboratory focuses on the time cycle to obtain results and reduce costs, or both components at the same time. Six Sigma methodology provides that the processes take place in the laboratory without delays and defects. The process that takes place at the Center for Medical Bio - chemistry (CMB) can be divided into two parts: the first part takes place in the receiving infirmary (pre-analytics) and the second part takes place at the offices of the CMB from the receipt of samples (analytics) to obtained results. The paper observes both processes, identifies critical areas where they come to a halt, defines access and reviews the results obtained using the Lean Six Sigma methodology. By applying Lean tools, the places that do not add value and those that significantly increase the cycle time were identified. This paper presents the results obtained without going into detail about the application of these Lean tools.
An enterprise which is managed in a modern way should be based on the concept of knowledge management. It is particularly important in the case of processes related to facility maintenance, where the efficiency and effectiveness of work is directly connected with the employees’ knowledge. Improvement of processes involved in facility maintenance has a real influence on the productivity of a manufacturing enterprise. High accessibility of technical equipment and its correct functioning influence not only production efficiency but also the quality of products and the safety of operators. The article is a description of an attempt to implement one of quality engineering methods for improving the facility maintenance process. The author decided to use the 8D method to shorten the duration of downtimes caused by breakdowns. Owing to the conducted analysis and the implementation of the improvement and preventive actions, we were able to shorten the duration of a downtime of a machine having a crucial importance for the company. Investigations and implementation were conducted in one of Silesian production plants..
current study used the FED technique to address the problem of high TTV rejects in the lapping process. At a broader level, the SixSigmamethodology was applied for improving the output quality of the lapping process. Six Sigma emphasises the need to identify and clearly define customer requirements and internal industrial factors for setting goals. The data-driven rigour component of the Six Sigma approach delineates objective decision-making purely guided by the statistical analysis of data to determine process strengths and weaknesses. It is crucial to this approach
, Johnson K, Shih J. Evaluation of technopath controls on the architect family of instruments. Clin Chem Lab Med 2015; 53, Special Suppl, pp S1-S1450. 19. Gulbahar O, Arslan B, Sen B, Cingirt M, Yılmaz SN. Evaluation of thyroid function tests in our laboratory by using six sigma analysis. Turkish Journal of Biochemistry 2015; 40 (S1). 20. Ercan M, Bogdaycıo lu N, Akbulut ED, O uz E, Top cuo lu C et al. Assessment of the analytic performance for immunassay tests with sixsigmamethodology. Clin Chem Lab Med 2015; 53, Special Suppl, pp S1-S1450. 21. Aksoy N, Tekin NH
Quality techniques and Design for Six Sigma methodology are complex areas that need to be understood through correlation of theoretical and practical teaching. Universities started to apply different approaches for achieving better results, on building greater knowledge and skills for their students. The paper presents a methodology of teaching quality techniques and DFSS methodology, an approach that is focused on understanding the concepts through technical examples from industry and applying the knowledge within a project. A model is proposed for teaching Design for Six Sigma methodology through a workshop done in the classroom. The students are split into groups and will practically work through the main elements of DFSS methodology, for improving the quality of a chosen product by re-designing it. The objective of research is to analyze the performance of this methodology and to identify the strong points. The measurement is done through feedbacks received from students, that is presented at the end of the paper. The methodologies used during research consist of bibliographic research, observational study on classroom, questionnaire and interview technique.
Objective: A major target of quality assurance is the minimization of error rates in order to enhance patient safety. Six Sigma is a method targeting zero error (3.4 errors per million events) used in industry. The five main principles of Six Sigma are defining, measuring, analysis, improvement and control. Using this methodology, the causes of errors can be examined and process improvement strategies can be identified. The aim of our study was to evaluate the utility of Six Sigma methodology in error reduction in our pathology laboratory.
Material and Method: The errors encountered between April 2014 and April 2015 were recorded by the pathology personnel. Error follow-up forms were examined by the quality control supervisor, administrative supervisor and the head of the department. Using Six Sigma methodology, the rate of errors was measured monthly and the distribution of errors at the preanalytic, analytic and postanalytical phases was analysed. Improvement strategies were reclaimed in the monthly intradepartmental meetings and the control of the units with high error rates was provided.
Results: Fifty-six (52.4%) of 107 recorded errors in total were at the pre-analytic phase. Forty-five errors (42%) were recorded as analytical and 6 errors (5.6%) as post-analytical. Two of the 45 errors were major irrevocable errors. The error rate was 6.8 per million in the first half of the year and 1.3 per million in the second half, decreasing by 79.77%.
Conclusion: The Six Sigma trial in our pathology laboratory provided the reduction of the error rates mainly in the pre-analytic and analytic phases.
Constantly improving, which is one of the principles of quality management is the base for good understanding, behaviour of individual processes, investigating variability and impact on its the process. The aim of every business is to increase profits. Reducing the cost of tools can also contribute to this. Utilising the DOE method to reduce the durability of removable cutting plate, as describe the article, is one of way, how to apply this method in practice. The DOE method enables find factors that are the most relevant to the production process and determine their best values. Using this method, you can set the selected inputs so that, the process achieves the desired results with maximum stability and resilience. The article contains a brief overview of Minitab software by which the collected process data was analysed. The core of the article describes how to solve the problem using the singular phases of the DMAIC cycle. Each of these phases has its own specific aim, which logically defines what activities each step is aimed at. DMAIC is extended variant of the process improvement model based at the Deming circle PDCA. Six sigma methodology is used as a standard procedure for project planning and realisation. At the end of an article is described that by increase durability of removable cutting plate the problems found in the analysis of the current condition that have been validated by a case study in the company have been eliminated.
Business process “receivables management” is a key position both in the system of financial management of the telecommunications company and its operating activities. The need for optimization of the business process is determined by its influence on financial performance. The paper considers the approach to optimize the business process within the framework of the Six Sigma methodology. To define accounts receivable probability, logit regression mathematical model has been proposed. The paper also considers the issue of the selection of terms for service payment in order to approximate the level of accounts receivable to the optimal value.