نتایج جستجو برای: statistical quality control
تعداد نتایج: 2276427 فیلتر نتایج به سال:
مقدمه: عفونت ادراری از بیماری های شایع و مزمن دوره کودکی، به ویژه در دختران زیر 6 سال است. این بیماری مزمن و پیچیده، سبب کاهش کیفیت زندگی مادر می شود. این پژوهش با هدف تعیین تاثیر الگوی توانمند سازی خانواده محور بر کیفیت زندگی مادران دارای دختر زیر6 سال مبتلا به عفونت ادراری انجام شده است. مواد و روشها: مطالعه نیمه تجربی حاضر در سال92-1391، در بیمارستان شهید مطهری ارومیه، با انتخاب 60 مادر د...
The performance of a mobile network is essentially based on the capacity of its radio access technology. A mobile network is spatially and functionally distributed. Its subsystems are in constant interaction with each other and with their geographic environment. Finding an appropriate approach to evaluate the capacity of a radio access technology with respect to a wide range of parameters (radi...
this paper is devoted to the study of determining optimal process mean in system production with the two markets for the sale of goods. in this paper, we developed an absorbing markov chain model in production systems where all items are inspected %100 for conformance with their specification limits. when the value of the quality characteristic of an item falls below a lower limit, the item is ...
in this research, a new control policy for the acceptance sampling problem is introduced. decision is made based on the number of defectives items in an inspected batch. the objective of the model is to find a constant control level that minimizes the total costs, including the cost of rejecting the batch, the cost of inspection and the cost of defective items. the optimization is performed by ...
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