نتایج جستجو برای: dynamic simulation

تعداد نتایج: 914677  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
shadi yadegar mahmoud reza pishvaie

in this article the methodology proposed by li and wang for mixed qualitative and quantitative modeling and simulation of temporal behavior of processing unit is reexamined and extended to more complex case. the main issue of their approach considers the multivariate statistics of principal component analysis (pca), along with clustered fuzzy digraphs and reasoning. the pca and fuzzy clustering...

The purpose of this paper is to present a new type of dynamic balancing system, having a driving solution of the rotating part based on magnetic interactions. The magnetic system also plays the role of an elastic bearing. In the first part of the article is presented the technical solution which allows the dynamic balancing evaluation depending on the radial displacement between two disks with ...

Journal: :journal of chemical and petroleum engineering 2011
amir abbas askari turaj behrouz

rock selection in modeling and simulation studies is usually based on two techniques; routinely defined rock types and those defined by special core analysis (scal). the challenge in utilizing these two techniques is that they are frequently assumed to be the same, but in practice, static rock-types (routinely defined) are not always representative of dynamic rock-types (scal defined) in the re...

Journal: :international journal of smart electrical engineering 2014
ahmad ahmadi yousef alinezhad beromi

in this paper, a novel neuro-fuzzy based method combined with a feature selection technique is proposed for online dynamic voltage stability status prediction of power system. this technique uses synchronized phasors measured by phasor measurement units (pmus) in a wide-area measurement system. in order to minimize the number of neuro-fuzzy inputs, training time and complication of neuro-fuzzy ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2008
omid vahidi mohammad shahrokhi ahmad mirzaei

in present paper, dynamic behavior and control of a fluidized bed reactor for polyethylene production has been considered. a double active sites model for ziegler-natta catalysts is used for simulation of polymerization reaction. hydrodynamic behavior of the bed is modeled using a two phase model including bubble and emulsion phases in which bubble phase has plug flow pattern with differentiall...

Journal: :journal of biomedical physics and engineering 0
y bazargan-lari department of mechanical engineering, college of mechanical and aerospace engineering, tehran science and research branch, islamic azad university, tehran, iran m eghtesad shiraz university a khoogar department of mechanical engineering, maleke-ashtar university of technology,lavizan,tehran, iran a mohammad-zadeh department of mechanical engineering, college of mechanical and aerospace engineering,tehran science and research branch, islamic azad university, tehran, iran

background: despite some successful dynamic simulation of self-impact double pendulum (sidp)-as humanoid robots legs or arms- studies, there is limited information available about the control of one leg locomotion. objective   : the main goal of this research is to improve the reliability of the mammalians leg locomotion and building more elaborated models close to the natural movements, by mod...

Journal: :advances in environmental technology 0
eslam kashi iranian research organization for science and technology - chemical technology department farshad mirzaei department of energy engineering, politecnico di milano, italy farzad mirzaei department of energy engineering, politecnico di milano, italy

in some instances, it is inevitable that large amounts of potentially hazardous chemicals like chlorine gas are stored and used in facilities in densely populated areas. in such cases, all safety issues must be carefully considered. to reach this goal, it is important to have accurate information concerning chlorine gas behaviors and how it is dispersed in dense urban areas. furthermore, mainta...

Journal: :iranian red crescent medical journal 0
afsoon aeenparast department of health services management, mother and child health research center, iranian institute for health sciences research, acecr, tehran, ir iran; clinical research center, milad hospital, tehran, ir iran; department of health services management, mother and child health research center, iranian institute for health sciences research p.o. box: 13145-1756, tehran, ir iran. tel: +98-2166480804, fax: +98-2166480805 seyed jamaleddin tabibi school of management science and medical information, tehran university of medical sciences and health services, tehran, ir iran kamran shahanaghi college of industrial engineering, iran university of science and technology, tehran, ir iran mir bahador aryanejhad college of industrial engineering, iran university of science and technology, tehran, ir iran

conclusions using the simulation as a decision making tool helps us to decide how we can reduce outpatient's waiting time. comparison of outputs of this scenario and the based- case scenario in simulation model shows that combining physician's work time changing with patient's admission time changing (scenario 9) would reduce patient waiting time about 73.09%. due to dynamic and complex nature ...

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