نتایج جستجو برای: stress control
تعداد نتایج: 1716162 فیلتر نتایج به سال:
in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...
The current flexibility of the energy market requires operating steam turbines that have challenging operation requirements such as variable conditions and higher number startups. This article proposes an advanced control system based on Nonlinear Model Predictive Control (NMPC) technique, which allows to speed up start-up increase produced while maintaining rotor stress a constraint variable. ...
Background and aims: Job stress is a major problem in the modern world and a main concern for organizations. Rescue workers, including firefighters constantly exposed to toxins, high emotional shock and stress resulted from physical injuries while performing their duty. Development of job stress in firefighters decreases occupational motivation and ultimately leads to productivity reduction. Th...
introduction in recent years, rainfall deficiency was an increasing problem in most countries; which limited the production of agricultural crops. among abiotic stresses the plants encountered, drought stress is considered as the most important limiting factor in plants growth and reproduction in natural and agricultural systems through most parts of the world; while drought stress causes 45% i...
the aim of this study was assessing the effectiveness of child-centered play therapy (ccpt) on reducing internalizing symptoms in children and reduced parental stress in mothers. the method of this study was quasi-experimental research study using a pretest-post-test along with the control group. a group of 20 children with 7 and 8 age in 2012-2013 school year (n=10 experimental and n=10 contro...
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