نتایج جستجو برای: process capability
تعداد نتایج: 1384139 فیلتر نتایج به سال:
A measurement control system ensures that measuring equipment and measurement processes are fit for their intended use and its important in achieving product quality objectives. The following paper introduces theoretical foundations for determination of the measuring process capability. Defines three capability indexes in short and recommended use of the Cpm index.
Process capability indices PCIs aim to quantify the capability of a process of quality characteristic X tomeet some specifications that are related to ameasurable characteristic of its produced items. One such quality characteristic is life time of items. The specifications are determined through the lower specification limit L , the upper specification limit U , and the target value T . Maiti ...
Enterprises are confronted with rapidly changing situations in regulations, globalisation, time-to-market pressures and advances in the technology. Management and design of capabilities allowing for more flexibility in business services is one way to tackle these challenges. This requires a shift from a business process oriented to capability management oriented view. In this respect this work ...
Process capability analysis is designed to estimate the proportion of parts that do not meet engineering requirements in a stable production process. In this paper, we review and criticize the capability indices typically used in industry for this purpose, and propose a general multivariate Bayesian capability index which contains the conventional index as a limiting case. We further derive its...
This article introduces a set of unified basic concepts for Process Capability Models for the unification, generalization and modeling of views of the structure and elements of relevant models, with more similar granularity of its leaf elements. This set is part of an ongoing research effort to evolve the current Software (and Systems) Process Improvement area towards a Model Driven Process Cap...
Process Capability Indices (PCIs) are appropriate tools in order to measure the inherent capability of a process. In statistical process control, there are some uncertainties in data, such as uncertain specification limits and data. In these cases, fuzzy logic can be employed to manage the uncertainties. There are some researches about fuzzy process capability indices and in this paper; we pres...
Process Capability: Definition and standard evaluation: Process Capability tells you, to what extent the process is likely to satisfy the customer's wish. Standard Process Capability calculations assume 99.73% coverage of the process mapped as σ 3 ± x. Where x is the process mean σ is the process standard deviation. The standard evaluation of Process Capability Indices Cp & Cpk is given by the ...
The usability maturity of two organisations was assessed using the model in ISO TR 18529 to identify the need for usability process improvement. The results were used to select simple user-based methods implementing the recommendations in ISO 13407 and were applied in trial development projects over a 12-month period. A second usability capability assessment at the end of the trial demonstrated...
Capability indices compare the actual performance of a manufacturing process to the desired performance. In practice these indices are estimated using sample data, often with quite small sample sizes. Thus, it is of interest to obtain confidence limits for actual capability index given a sample estimate. Most of the traditional methods for assessing the capability of manufacturing process are d...
As is discussed by Walker, Abraham De Moivre first discovered the Normal distribution in 1733. This theoretical distribution has since been found to model many real life situations well, including distributions of heights and weights. It is very important in statistical theory, for example via the Central Limit Theorem (CLT). Though this theorem assists us in control chart methodology, it serve...
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