نتایج جستجو برای: process behavior
تعداد نتایج: 1849368 فیلتر نتایج به سال:
This paper investigates the dynamic behavior of Gas Metal Arc Welding (GMAW) process for two types of power supplies –inverter and rectifier- for short circuit transfer mode. The large ripples on the rectifier power source are able to perturb the metal transfer mode. In this experimental work some operating points in the short circuit mode have been selected using an automatic pipeline welding ...
In this investigation, the effect of heat input of SMAW process on the corrosion behavior of Hadfield steel weld joints was investigated. For this purpose, 4 annealed sheets with thickness 25 mm prepared from Hadfield steel and then welding applied by SMAW process with 6.75 and 11.25 kJ/mm heat input values. For corrosion behavior evaluation of base metal and weld metal areas, potentiodynamic p...
This paper employs a general non-linear analysis tool to analyse the nature of time series associated with the price (returns) of a particular company in Tehran Stock Exchange. It is shown that the behavior of the process associated with the price (returns) time-series of this company is weakly chaotic, and due to the non-random behavior of the process, short term prediction of stock price is p...
Background and Aim: Information seeking behavior arises when one feels a void in his/her knowledge which inspires one to acquire new information. The central point in explaining behavior is the fact that many features influence its occurrence, and emotions are considered to be a major element involved in human information behavior. Also, Information seeking is a positive and negative emotional...
Since tubes are widely used for different industrial applications, processing of tubes by the Severe Plastic Deformation (SPD) method has been the target of different attempts. Among these attempts, development of SPD processes for tubes based on Equal Channel Angular Pressing (ECAP) has been more successful. As an illustration, Tube Channel Pressing (TCP) has been presented as an attractive SP...
Background and Aim: This study is set to represent information search process in the selected preschool children in Tehran (namely Mahgol and Taranom) and compare the results with BAT model. Methods: This is an Applied and comparative study with qualitative approach based on grounded theory. Research population was preschool children in Tehran from two different regions of city. Sampling was do...
In this paper, distributed parameter process systems behavior is studied in frequency domain. Based on the dominant gain concept that is developed for such studies, a method is presented to control distributed parameter process systems. By using dominant gain concept, the location of open loop zeros, resulted from the time delay parameter in the process model, were changed from the right half p...
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