نتایج جستجو برای: section bucerates
تعداد نتایج: 157838 فیلتر نتایج به سال:
This paper reviews a cyclic scheduling model of repetitive manufacturing environments consisting of exible machines and multi-stage jobs. We explicitly model two system performance measures, throughput and ow time, while incorporating variability arising from uncertainty in operation processing times. We present an iterative approximation scheme to estimate the two moment behavior of our perfor...
power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...
background:the diagnostic accuracy of frozen section as an important source of information in surgical pathology is important not only in the management of surgical patients but also as a measure of quality control in surgical pathology. in this study, we evaluated the diagnostic accuracy of frozen sections over a 6-year period in a teaching hospital in iran. methods: we retrospectively review...
in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...
We show that long-run average cost function for the (R, T) policy with normally distributed demand has a structure similar to that of the corresponding (Q, r) model so that many of the useful properties of the latter model are applicable. In particular, (i) the optimal cost is relatively insensitive to the choice of the reorder interval, T, provided a near-optimal R corresponding to the chosen ...
تعیین محدوده سردهها در زیرتباره Trigonellinae Small یکی از بحث برانگیزترین موضوعات تاکسنومیکی در این زمینه در حدود 100 سال گذشته بوده است. طرح صفات جدا کننده متعدد توسط گیاهشناسان مختلف موید این ادعا میباشد. صفات مربوط به قطعات گل به خوبی دیگر ویژگیهای رویشی به طور گستردهای تاکنون مورد استفاده قرار گرفته است. در این مقاله براساس 5 صفت کیفی و 19 صفت کمی مربوط به قطعات گل گونههای متعلق به س...
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