identification of a real time of a change in a process, when an out-of-control signal is present is significant. this may reduce costs of defective products as well as the time of exploring and fixing the cause of defects. another popular topic in the statistical process control (spc) is profile monitoring, where knowing the distribution of one or more quality characteristics may not be appropr...

To overcome stress, such as resource limitation, an organism often needs to successfully mediate competition with other members of its own species. This may favor the evolution of defective traits that are harmful to the species population as a whole, and that may lead to its dilution or even to its extinction (the tragedy of the commons). Here, we show that this phenomenon can be circumvented ...

Evaluation of dry-cured Iberian ham quality is carried out by means the sense smell experts and a percentage these hams are discarded due to odour defects. However, in cellars cannot be altered sampling because they would devaluated, which makes instrumental analysis difficult. Thus, aim this work assess potential headspace gas chromatography coupled ion mobility spectrometry (HS-GC-IMS) or mas...

The paper develops an order quantity model with trade credit plus shortages under learning effects for deteriorating imperfect quality products. Generally, when the lot has items, inspection of a is necessary to improve lot. In this article, seller provides defective his buyer financing scheme, and after that separates whole screening process into two categories, one other non-defective items. ...

This paper addresses the problem of reworking of defective items and develops an integrated cost model so as to minimize the extra costs of reworking/scraping of work pieces. Items to be reworked are the results of quality problem. To improve a product’s quality, the selection of process target is extremely important since it directly affects the process defective rate, material cost, rework or...

Congenitally defective metabolic pathways adversely affect the quality of life of patients as well as their care givers. Early diagnosis is therefore vital. Frequently, radio-imaging alone raises a strong suspicion and sometimes even provides conclusive evidence of defective metabolic pathways, when the patient presents with signs and symptoms that clinically fail to lead to a definitive diagno...

This paper is an extension of Hsu and Hsu (Int J Ind Eng Comput 3(5):939–948, 2012) aiming to determine the optimal order quantity of product batches that contain defective items with percentage nonconforming following a known probability density function. The orders are subject to 100 % screening process at a rate higher than the demand rate. Shortage is backordered, and defective items...

In this study, we proposed a mathematical model for four-level defective goods supply chain with imperfect quality of commodity components in an uncertain state to maximize profit of supply chain. It is assumed that the inspection of incoming parts in suppliers is randomly done and incomplete. This lead some of the manufactured products will not be properly manufactured because of defective par...

It is much to be regretted that the question of the dietary of school boarders is not receiving the attention it deserves. An insufficient or unbalanced diet, as we all know, is not only a very serious cause of ill-health but also leads to defective development of the intellect I and is especially detrimental to growing children. The dietary in the hostels attached to the high schools of Bihar ...