Kurum Yazarı "Erginel, Nihal" Bildiri Koleksiyonu İçin Listeleme
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Determining the Criteria and Evaluating Six Sigma Projects via Fuzzy ANP method in Group Decision
Altıntaş, Merve; Erginel, Nihal; Küçük, Gamze (Elsevier Science BV, 2016)Six Sigma is a well-structured methodology based to detect and reduce the variation on design and production process. Six sigma helps to achieve the company's goals by driving the six sigma projects throughout the company. ... -
Estimating Fuzzy Life Time with a Fuzzy Reliability Function in the Appliance Sector
Erginel, Nihal; Saraçoğlu, Hande; Yıldız, Gülay; Şentürk, Sevil (Springer International Publishing Ag, 2018)Reliability is defined as the length of time a component works without failing. The reliability function shows an estimate for the probable amount of time a component should work without experiencing failure. Fuzzy set ... -
Fuzzy (p)over-tilde control chart
Erginel, Nihal (World Scientific Publ Co Pte LTD, 2008)Control charts are very useful tool for monitoring and analyzing the processes. When the quality characteristics cannot be represented in numerical form, like softness, appearance, chapped, damaged, etc., control charts ... -
Fuzzy Dea Approach to Solve the Location Selection of Wind Energy
Erginel, Nihal; Yalçınkaya, Merve; Şentürk, Sevil (World Scientific Publ Co Pte LTD, 2012)Wind energy is an important energy source among the renewable energies, in nowadays. Turkey has many wind energy locations due to the appropriate weather conditions. The problem of location selection of wind energy depends ... -
Fuzzy individual and moving range control charts with ?-cuts
Erginel, Nihal (2008)In Statistical Process Control (SPC), both variable and attribute control charts are widely used techniques to monitor and evaluate the process with respect to the related quality characteristics. In variable control charts, ... -
A Fuzzy multiple objective decision model to select the significant qualty characteristics of a product
Erginel, Nihal (2007)Prioritization the significant quality characteristics are considerable area in quality planning process. All quality characteristics of a product can not be measured/ tested incoming department or production line due to ... -
Fuzzy p˜ control chart
Erginel, Nihal (2008)Control charts are very useful tool for monitoring and analyzing the processes. When the quality characteristics cannot be represented in numerical form, like softness, appearance, chapped, damaged, etc., control charts ... -
A Heuristic Based on Multi Objective Linear Programming Under Fuzziness for the Vehicle Routing Problem
Yalçın, Gülçin Dinç; Erginel, Nihal (World Scientific Publ Co Pte LTD, 2012)A heuristic is proposed for the Vehicle Routing Problem in this study. The heuristic has two phases that are named as clustering phase and routing phase, and also it has a local search. Firstly customers are assigned to ... -
Intuitionistic fuzzy REBA method and its application in a manufacturing company
Erginel, Nihal; Toptanci, S. (Springer Verlag, 2019)Work-related musculoskeletal disorders (WMSDs) are a major health problem. Many methods have been developed for assessing the risk level of work for WMSDs. Rapid Entire Body Assessment (REBA) method is one of the most ... -
Modeling attribute control charts by interval type-2 fuzzy sets
Erginel, Nihal; Şentürk, Sevil; Yıldız, Gülay (Springer, 2018)Fuzzy attribute control charts, where data are classified into conforming/nonconforming product units, are used to monitor fuzzy fractions of nonconforming units for variable sample sizes and the fuzzy number of nonconforming ... -
Monitoring Fraction Nonconforming in Process with Interval Type-2 Fuzzy Control Chart
Erginel, Nihal; Şentürk, Sevil; Yıldız, Gülay (Springer International Publishing Ag, 2018)Fuzzy set theory is particularly appropriate approach when data include imprecise. Type-2 fuzzy set theory captures ambiguity that associates the uncertainty of membership functions by incorporating footprints and models ... -
A performance evaluation model with fuzzy AHP for each department
Erginel, Nihal; Akçay, E. (Computers and Industrial Engineering, 2014)Performance evaluation is becoming more important due to the raising of criteria and greater awareness of personnel attributes affected by the business approach. Although there have been several approaches on performance ... -
Ranking the Technical Requirements of the Airport for Maximum Passenger Satisfaction
Kayapinar, Sema; Erginel, Nihal (Springer-Verlag Berlin, 2013)Airport service quality is crucial due to the increasing traveling by plane, nowadays. There are some studies on the passengers satisfaction in literature. But lots of them are related to determine the passengers' needs ... -
The statistical analysis of coloring problems faced in ceramic floor tile industry
Erginel, Nihal; Doğan, B; Ay, Nuran (Trans Tech Publications LTD, 2004)Undesired coloring phenomenon is one of the most important problems in ceramic sector. Six Sigma is the methodology that aims to prevent the nonconformance product by reducing the variation in the process with applying ...