A study on the present worth of bivariate quality loss

2000 ◽  
Vol 23 (2) ◽  
pp. 251-258 ◽  
Author(s):  
Chao‐Yu Chou ◽  
Wen‐Hsiung Liang ◽  
Chun‐Lang Chang
Keyword(s):  
Quality Loss ◽  
Present Worth

Modeling Present Worth of Product Quality Loss of STB Characteristic Based on Service Life Distribution

2013 ◽  
Vol 397-400 ◽  
pp. 846-851 ◽  
Author(s):  
Yan Ming Zhao ◽  
De Shun Liu ◽  
Ze Jun Wen ◽  
Ting Liu
Keyword(s):  
Service Life ◽  
Product Quality ◽  
Cylindrical Surface ◽  
Quality Characteristics ◽  
Quality Characteristic ◽  
Quality Loss ◽  
Life Distribution ◽  
New Model ◽  
Product Service ◽  
Present Worth

The product smaller-the-better (STB) quality characteristics are continually changing and out of specification limits because of the constant stress, wear and others after the product is put into use, which will cause loss because of the product rejected and scrapped. On the basis of the quality viewpoint that product quality loss is present worth of a loss caused as a result of its quality characteristics because its quality characteristic is out of specification and lead to product scrap after the product is put into service, the paper establishes the present worth model of quality loss of STB characteristic based on service life distribution, and proposes the calculation method on the probability density function (PDF) of the product service life based on the technical specifications of STB quality characteristic. It takes the concentricity between the inner cylindrical surface and the outer cylindrical surface of the link bushing as an example to analysis the various factors that impact on the present worth of concentricity quality loss in the new model, and contrast with Taguchi quality loss model. The results show that the new model describes an actual loss that a product imparts to society after the product is put into service, and can reflect the quality loss of STB characteristic in the product service process, and is more realistic than Taguchi quality loss model of STB. The new model extends tolerance design of STB characteristic from the manufacturing stage to the service stage.

On the present worth of multivariate quality loss

2001 ◽  
Vol 70 (3) ◽  
pp. 279-288 ◽  
Author(s):  
Chao-Yu Chou ◽  
Chung-Ho Chen
Keyword(s):  
Quality Loss ◽  
Present Worth

scholarly journals Ethylene Sensor-Enabled Dynamic Monitoring and Multi-Strategies Control for Quality Management of Fruit Cold Chain Logistics

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5830
Author(s):  
Xuepei Wang ◽  
Xinwu Li ◽  
Daqi Fu ◽  
Rajko Vidrih ◽  
Xiaoshuan Zhang
Keyword(s):  
Quality Management ◽  
Control Strategies ◽  
Response Speed ◽  
Chromatic Aberration ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Cold Chain ◽  
Dynamic Monitoring ◽  
Quality Loss ◽  
Exogenous Ethylene

Due to the presence of bioactive compounds, fruits are an essential part of people’s healthy diet. However, endogenous ethylene produced by climacteric fruits and exogenous ethylene in the microenvironment could play a pivotal role in the physiological and metabolic activities, leading to quality losses during storage or shelf life. Moreover, due to the variety of fruits and complex scenarios, different ethylene control strategies need to be adapted to improve the marketability of fruits and maintain their high quality. Therefore, this study proposed an ethylene dynamic monitoring based on multi-strategies control to reduce the post-harvest quality loss of fruits, which was evaluated here for blueberries, sweet cherries, and apples. The results showed that the ethylene dynamic monitoring had rapid static/dynamic response speed (2 ppm/s) and accurately monitoring of ethylene content (99% accuracy). In addition, the quality parameters evolution (firmness, soluble solids contents, weight loss rate, and chromatic aberration) showed that the ethylene multi-strategies control could effectively reduce the quality loss of fruits studied, which showed great potential in improving the quality management of fruits in the supply chain.

Hidden quality costs and the distinction between quality cost and quality loss

2001 ◽  
Vol 12 (2) ◽  
pp. 179-190 ◽  
Author(s):  
Georgios Giakatis ◽  
Takao Enkawa ◽  
Kazuhiko Washitani
Keyword(s):  
Quality Loss ◽  
Quality Cost ◽  
Quality Costs
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