نتایج جستجو برای: h_infty control

تعداد نتایج: 1329044  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده ادبیات و علوم انسانی 1392

abstract the first purpose of this study was to investigate the effect of consciousness-raising (c-r) activities on learning grammatical structures (simple present tense in this case) by iranian guidance school efl learners. the second one was to investigate the effect of gender on learning the simple present tense through c-r activities and tasks. finally, this study aimed to investigate the ...

Paryab, Sedigheh,

  لوله های PEG در بیماران نیازمند به تغذیه طولانی مدت مورد استفاده قرار می گیرد. این لوله را معمولا می توان در بیمارانی که از تسهیلات وسیع مراقبتی استفاده می نمایند مشاهده نمود. اینکه بیماری حاد چگونه بسرعت برطرف می گردد، مهم نیست بلکه خطر سوء تغذیه با عوارض جدی ناشی از جابجایی مستقیم لوله PEG از اهمیت خاصی برخوردار است. در این مقاله، نحوه قرارگیری لوله PEG، فیکس کردن و باز بودن مجرای آن و همچ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده پزشکی 1390

nitric oxide (no) is a small molecule synthesized by most of mammalian cells with diverse biological activities including vasodilatation, host defense and wound healing. impaired wound healing is a common occurrence among diabetics and patients receiving glucocorticoid therapy. on the other hand the application of laser in biomedical area have been increased. thus, the current studies were desi...

Journal: :energy equipment and systems 2015
hamed javaheri fard hamid reza najafi hossein eliasi

wind energy today, has attracted widespread interest from among a variety of sources of renewable energy in the world. owing to the increasing demand for production of electrical energy for electricity networks by using wind power, it is essential that wind power plants are actively incorporated in the network’s performance using an appropriate control system. in general, these wind power plant...

Journal: :iranian journal of fuzzy systems 0
jiaxian wang school of mathematics and statistics, xidian university, xi'an, 710071, china junmin li school of mathematics and statistics, xidian university, xi'an, 710071, china

in this paper, a new t-s fuzzy hyperbolic delay model for a class of nonlinear systems with time-varying delay, is presented to address the problems of stability analysis and feedback control. fuzzy controller is designed based on the parallel distributed compensation (pdc), and with a new lyapunov function, delay dependent asymptotic stability conditions of the closed-loop system are derived v...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
jamal gholami ahangarani, karim salahshoor behzad moshiri

a fault-tolerant control (ftc) methodology has been presented for nonlinear processes being imposed by control input constraints. the proposed methodology uses a combination of feedback linearization and model predictive control (flmpc) schemes. the resulting constraints in the transformed process will be dependent on the actual evolving states, making their incorporation in the design context ...

Journal: :iranian journal of science and technology (sciences) 2013
g. b. loghmani

the aim of this paper is to introduce a new approach for obtaining the numerical solution of singulary perturbed boundary value problems based on an optimal control technique. in the proposed method, first the mentioned equations are converted to an optimal control problem. then, control and state variables are approximated by chebychev series. therefore, the optimal control problem is reduced ...

Journal: :international journal of industrial engineering and productional research- 0
alireza sharafi m.s.c. department of industrial engineering, amirkabir university majid aminnayeri associate prof. department of industrial engineering, amirkabir university amirhossein amiri assistant professor. department of industrial engineering, faculty of engineering, shahed university mohsen rasouli m.s. student. department of industrial engineering, isfahan university of technology

identification of a real time of a change in a process, when an out-of-control signal is present is significant. this may reduce costs of defective products as well as the time of exploring and fixing the cause of defects. another popular topic in the statistical process control (spc) is profile monitoring, where knowing the distribution of one or more quality characteristics may not be appropr...

Journal: :health education and health promotion 0
amir reza nabipour m.sc., neuroscience research center, kerman university of medical sciences, kerman, iran marziyeh moradi ph.d. candidate, department of public health, faculty of public health and paramedical sciences, student research committee, semnan university of medical sciences, semnan, iran/ department of biostatistics and epidemiology, faculty of public health, iran university of medical sciences, tehran, iran narges khanjani associate professor, neurology research center, kerman university of medical sciences, haft bagh alavi blvd, kerman, iran zahrasadat soltani b.sc., shahid beheshti university of medical sciences, tehran, iran hossein zirak moradlou m.sc., tehran education and training organization, tehran, iran

aim: health locus of control includes the degree of a person's belief in the fact that his/her health is controlled by internal or external factors. the aim of this study was to determine the status of health locus of control and its related factors among iranian pilgrims.methods: this cross-sectional study was performed on 600 pilgrims of the holy shrines in tehran in 2015. people aged ov...

Journal: :journal of medical signals and sensors 0
abdolreza hashemian mohammad taghi bahreyni toossi shahrokh nasseri

multileaf collimator (mlc) is among the radiation field shaping systems used for conformal radiotherapy and intensity modulation radiation therapy techniques. the mlc system that has been designed and fabricated in this study includes 52 leaves, 52 stepper motors, 2 dc motors, 16 programmable logic controllers (plcs) and one human machine interface (hmi). this system can be mounted on conventio...

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