نتایج جستجو برای: genetic model
تعداد نتایج: 2627866 فیلتر نتایج به سال:
in this paper, we consider a flow shop scheduling problem with availability constraints (fsspac) for the objective of minimizing the makespan. in such a problem, machines are not continuously available for processing jobs due to preventive maintenance activities. we proposed a mixed-integer linear programming (milp) model for this problem which can generate non-permutation schedules. furthermor...
Scheduling problems play a big role in manufacturing and planning the production for increasing the production efficiency and assigning the resources to operations. Furthermore, in many manufacturing systems there is a physical space between stages that called intermediate buffers. In this study, a model is proposed for minimizing the makespan of a hybrid flow shop scheduling problem with inter...
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
Background: Sexual reproduction affords the stands for conserving genetic characteristics and sequentially, genetic inconsistency may influence the capability to imitate. Materials and Methods: Research was conducted by subject in PubMed and other databases. Results: A significant number of genotypes have been related with infertility phenotypes and evaluation of precise genes in humans and mod...
The study was designed to investigate the relationship between growth trait and biometric traits in Baluchi sheep. This study was conducted to estimate the genetic and phenotypic biometric traits including daily gain (ADG) and height at withers (HW), height at back (HB), body length (BL), heart girth (HG), leg girth (LG) and testis girth (TG) in Baluchi sheep. Total data of 4542 records from...
CEC of the soil is the exchange sites of organic and inorganic soil colloids. Modeling and Estimation of CEC is a useful indicator for fertility. The new alternative approaches for estimating CEC are indirect methods based on intelligent models. In this research in order to estimate CEC, 485 soil samples were prepared from two regions, chaparsar (Mazandaran in northern Iran) and Bostanabad (Nor...
امروزه رقابت ها و همکاری های اقتصادی جهانی، بیش از پیش افزایش یافته است و همچنین، تقاضای مشتریان پیوسته در حال تغییر است. لذا، لازم است که چیدمان تسهیلات سازمان ها، در مقابل تغییرات سریع القایی از محیط های خارجی و داخلی، انعطاف پذیر باشد. بنابراین، طبیعت دینامیک چیدمان تسهیلات باید مورد توجه قرار گیرد. به بیان دیگر، جریان مواد بین بخش ها در طول افق برنامه ریزی (دوره های چندگانه) تغییر می کند و ...
Introduction: Breast cancer is one of the most common types of cancer and the most common type of malignancy in women, which has been growing in recent years. Patients with this disease have a chance of recurrence. Many factors reduce or increase this probability. Data mining is one of the methods used to detect or anticipate cancers, and one of its most common uses is to predict the recurrence...
The aim of this study was to model the variances and covariances of body weight in Zandi sheep from 60 to 365 days of age using random regression models (RRM). Legendre polynomials of different orders were used to model the direct and maternal covariances. Mean trends were also modeled through a quadratic regression on orthogonal polynomials of age. Homogeneity and heterogeneity of the residual...
The objectives of present study were to estimate the genetic and permanent environmental covariance components and genetic and phenotypic trends of test-day records of somatic cell score (SCS) of the first lactation Iranian Holstein cows. Dataset included the 108995 test day records were collected by the Animal Breeding Center of Iran from 2001 to 2010. The GLM procedure of SAS software was use...
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