Economic aspects of the LTPD single sampling inspection plans

Abstract

Th e paper deals with the LTPD (Lot Tolerance Percent Defective) single sampling plans when the remainder of rejected lots is inspected. Th ere are considered two types of the LTPD plans -for inspection by variables and for inspection by variables and attributes (all items from the sample are inspected by variables; the remainder of rejected lots is inspected by attributes). Th ese plans were created by the author of this paper and published in the Statistical Papers. Th ese new plans were compared with the corresponding Dodge-Romig LTPD plans for the inspection by attributes from the economic point of view. From the results of the numerical investigations, it follows that under the same protection of consumer the LTPD plans for the inspection by variables are in many situations more economical than the corresponding Dodge-Romig attribute sampling plans (saving of the inspection cost is 80% in any cases). Th e dependence of the saving of the inspection cost on the acceptance sampling characteristics is analyzed in the paper.

Economic efficiency of the AOQL single sampling plans for the inspection by variables

“…This problem was solved in Klufa (2008), the exact solution is in Kaspříková (2012) -LTPDvar is an add-on package to the R software (see R Development Core Team 2011). Similar problems are solved in Chen and Chou (2001), Kaspříková and Klufa (2015), Wilrich (2012), Ho et al (2012), Yen et al (2014), Klufa (2015), Aslam et al (2015), Wang and Lo (2015), Balamurali et al (2014).…”

Group SkSP-R sampling plan for accelerated life tests

“…On the other hand, a group life test sampling plan is performed by installing more than one item in a single tester, that is, if there is a capacity of five items on a single tester, then four testers are needed to perform the life test using group sampling. Therefore, group acceptance sampling plans are considered more economic than traditional sampling plans [4][5][6][7].…”

Methodological advances to improve the cost-effectiveness of monitoring for mycotoxins in cereal grains

“…Although aflatoxins are more likely to be a problem in tropical and sub-tropical areas, the annual losses due to aflatoxins in US corn have been estimated to be about USD 163 million (Wu, 2006). Even though Europe might not be seen as a high risk area, in Southern Europe, aflatoxins were detected in 55% of the cereal samples collected in 2012, in 40% of the samples in 2014, in 38% of the samples in 2016, and in 21% of the samples in 2018 (BIOMIN, 2012;2015;. Furthermore, climate change may lead to an increased probability of the presence of aflatoxins (van der Fels-Klerx et al, 2019).…”

“…In addition, during the last decade, aflatoxins have been observed in high frequency in Southern Europe. They were present in 55% of the cereal samples in 2012, in 40% of the samples in 2014, in 38% of the samples in 2016, and in 21% of the samples in 2018 (BIOMIN, 2012;2015;. Furthermore, climate change is expected to increase the probability of aflatoxins being present in food crops (Battilani et al, 2016;van der Fels-Klerx and Camenzuli, 2016).…”