http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Optimal designing of an SkSP-R double sampling plan
Balamurali, Saminathan,Ahmad, Liaquat,Aslam, Muhammad,Hussain, Jaffer,Jun, Chi-Hyuck Informa UK (TaylorFrancis) 2018 Communications in Statistics Vol.47 No.17
<P>In this article, we propose a method of planning and determining the optimum parameters of a SkSP-R skip-lot sampling plan by using the attribute double sampling plan as the reference plan. The SkSP-R plan is a new type of skip-lot sampling plan which has a provision for re-inspecting the submitted lots. The optimal plan parameters of the suggested sampling plan are estimated with the target that the average sample number be minimized and satisfying both the specified producer's as well as the consumer's risks simultaneously. In order to obtain the optimum parameters, tables are also built for different combinations of the acceptable quality level and the limiting quality level in conjunctions with different producer's and consumer's risks. An illustrative example is provided for the implementation of the suggested plan. The advantages of the suggested plan over the existing conventional sampling plans and other existing skip-lot sampling plans are also described.</P>
Repetitive group sampling procedure for variables inspection
Balamurali, S.,Jun, Chi-hyuck Taylor Francis 2006 Journal of applied statistics Vol.33 No.3
<P> This paper introduces the concept of repetitive group sampling (RGS) for variables inspection. The repetitive group sampling plan for variables inspection will be useful when testing is costly and destructive. The advantages of the variables RGS plan over variables single sampling plan, variables double sampling plan and attributes RGS plan are discussed. Tables are also constructed for the selection of parameters of known and unknown standard deviation variables repetitive group sampling plan indexed by acceptable quality level and limiting quality level.</P>
SkSP-R sampling plan based on process capability index
Hussain, Jaffer,Balamurali, S.,Aslam, Muhammad,Jun, Chi-Hyuck Informa UK (TaylorFrancis) 2017 Communications in Statistics Vol.46 No.6
<P>In this paper, we present an optimal designing methodology for the skip-lot sampling plan (SkSP) of type SkSP-R based on the most widely used process capability index (PCI) C-pk. The SkSP-R plan is one of the SkSPs that incorporate the provision of the reinspection concept. In order to design the optimal parameters, we consider both symmetric and asymmetric fraction non conforming cases. Tables are also constructed to determine the optimal parameters by formulating an optimization problem. The advantages of the proposed plan over the existing plan are also discussed. Application of the plan is explained with a real-life example.</P>
A Modified Single Sampling Plan for the Inspection of Attribute Quality Characteristics
Subramani, J.,Balamurali, S. Korean Institute of Industrial Engineers 2016 Industrial Engineeering & Management Systems Vol.15 No.1
In this manuscript, a modified single sampling plan is proposed for the inspection of products in which the nonconforming items can be classified in to two categories namely critical and non-critical; and explained with the help of industrial example. The operating procedure of this plan is also proposed and the performance measures such as the probability of acceptance, average sample number, average total inspection and average out going quality are also derived. The optimal parameters are determined which will have minimum sample size. The efficiency of the proposed plan is also discussed over the conventional single sampling plan. The extensive tables for selecting a modified single sampling plan based on AQL and LQL are provided for both Binomial and Poisson distributions and explained with the help of industrial data.
A Two-Plan Sampling System for Life Testing Under Weibull Distribution
Aslam, Muhammad,Balamurali, Saminathan,Jun, Chi-Hyuck,Ahmad, Munir Korean Institute of Industrial Engineers 2010 Industrial Engineeering & Management Systems Vol.9 No.1
A two-plan sampling system is proposed for a failure-censored life testing when the lifetime follows a Weibull distribution with known shape parameter. The proposed sampling system is based on a switching rule, for switching between the tightened and the normal inspection levels when lots are submitted for inspection in the order of production or in some other systematic way. The design parameters of the proposed sampling system are determined by the two-point approach considering the producer's risks and the consumer's at the specified acceptable reliability level and the lot tolerance reliability level, respectively. It has been observed that the proposed system requires only a single failure for the observation.
A Modified Single Sampling Plan for the Inspection of Attribute Quality Characteristics
J. Subramani,S. Balamurali 대한산업공학회 2016 Industrial Engineeering & Management Systems Vol.15 No.1
In this manuscript, a modified single sampling plan is proposed for the inspection of products in which the nonconforming items can be classified in to two categories namely critical and non-critical; and explained with the help of industrial example. The operating procedure of this plan is also proposed and the performance measures such as the probability of acceptance, average sample number, average total inspection and average out going quality are also derived. The optimal parameters are determined which will have minimum sample size. The efficiency of the proposed plan is also discussed over the conventional single sampling plan. The extensive tables for selecting a modified single sampling plan based on AQL and LQL are provided for both Binomial and Poisson distributions and explained with the help of industrial data.
A Two-Plan Sampling System for Life Testing Under Weibull Distribution
Muhammad Aslam,Saminathan Balamurali,Chi-Hyuck Jun,Munir Ahmad 대한산업공학회 2010 Industrial Engineeering & Management Systems Vol.9 No.1
A two-plan sampling system is proposed for a failure-censored life testing when the lifetime follows a Weibull distribution with known shape parameter. The proposed sampling system is based on a switching rule, for switching between the tightened and the normal inspection levels when lots are submitted for inspection in the order of production or in some other systematic way. The design parameters of the proposed sampling system are determined by the two-point approach considering the producer"s risks and the consumer"s at the specified acceptable reliability level and the lot tolerance reliability level, respectively. It has been observed that the proposed system requires only a single failure for the observation.
Neeraj Gupta,Rajasekaran Shanmuganathan,Balamurali G,Ajoy Shetty 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.2
Study Design: Retrospective case study by clinical and radiological data analysis. Purpose: To analyze different types of vertebral anomalies and the incidence of associated intraspinal anomalies in the Indian population. Overview of Literature: This is the largest study of congenital scoliosis and associated intraspinal anomalies in Indian population. Incidence of intraspinal anomaly in this series is 47% which is higher than previous literature. Hemivertebra was the most common anomaly as seen in previous studies. Methods: A total of 119 patients with congenital scoliosis who underwent surgery between December 2006 and December 2012 were studied. Data was reviewed with medical records, plain radiographs, and magnetic resonance imaging (MRI) scans. Results: Thoracolumbar curve was most common, seen in 43.6% of patients. In addition to scoliotic deformity, kyphosis was seen in 26% of patients. Failure of formation, the most common vertebral anomaly, was seen in 51.2% of patients, failure of segmentation was seen in 19.3% of patients, and there were 29.4% patients having both formation and segmentation anomalies. Hemivertebra was the most common vertebral anomaly seen in 66.3% of patients and for whom 63.2% were in thoracic spine. Intraspinal anomalies were associated with 47% of patients with congenital scoliosis. Tethered cord was the most common intraspinal abnormality and was found in 48.2% patients with intraspinal anomalies. The patients with failure of segmentation and mixed deformities were found to have a significantly higher incidence of intraspinal anomalies (65% and 57%, respectively) than those with failure of formation (34%). Out of 31 patients with kyphotic deformity 29% had intraspinal anomalies, and amongst them tethered cord was the most common anomaly seen in 66% patients. Out of 12 patients with neurocutaneous markers, 83% patients had intraspinal anomaly. Conclusions: Intraspinal anomalies were seen in 47% of patients with congenital scoliosis in the Indian population. Tethered cord was the most common intraspinal anomaly, seen in 48% cases of congenital scoliosis. Hemivertebra was seen in 66% cases and was the most common vertebral defect. Hence MRI imaging of whole spine should be done in all cases of congenital scoliosis before any surgical intervention. Special attention should be given to physical examination and visualization of any neurocutaneous markers, which are associated with a higher incidence of intraspinal anomalies; absence of a neurocutaneous marker, however, does not rule out intraspinal anomaly.