نتایج جستجو برای: process types
تعداد نتایج: 1723585 فیلتر نتایج به سال:
abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...
In this paper, single, bi-layered and three-layered tube hydroforming processes were numerically simulated using the finite element method. It was found that the final bulges heights resulted from the models were in good agreement with the experimental results. Three types of modeling were kept with the same geometry, tube material and process parameters to be compared between the obtained hydr...
In this work, three types of natural clays including kaolinite, montmorillonite, and illite with different molecular structures, as adsorbents, are selected for the removal of methylene blue dye, and their performance is investigated. Also the optimization and the analysis of the dye adsorption mechanism are performed using the response surface methodology, molecular modeling, and experimental ...
Background and purpose: The elongation of styloid process can result in Eagle syndrome. The purpose of this study was to investigate the prevalence and pattern of ossification of elongated styloid process (ESP) in digital panoramic radiography and their association with gender and age. Materials and methods: In this retrospective study, 400 digital panoramic radiographs of patients attending O...
abstract: advertisements are the most accessible type of authentic materials, and this is one reason why they are used more and more in english teaching classes. for this cause, studies in the field of advertisements are very widespread nowadays. for pun is one aspect which makes advertisements more interesting, it is used more than before in advertisements. use of puns makes an advertisement m...
Models of the spatial distribution animals provide useful tools to help ecologists quantify species-environment relationships, and they are increasingly being used determine impacts climate habitat changes on species. While high-quality survey-style data with known effort sometimes available, often researchers have multiple datasets varying quality type. In particular, collections sightings mad...
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