نتایج جستجو برای: independent parameters

تعداد نتایج: 996510  

Journal: :Chaos, solitons, and fractals 2015
Claudia Lainscsek Jonathan Weyhenmeyer Terrence J Sejnowski Christophe Letellier

The transformation of a nonlinear dynamical system into a standard form by using one of its variables and its successive derivatives can be used to identify the relationships that may exist between the parameters of the original system such as the subset of the parameter space over which the dynamics is left invariant. We show how the size of the attractor or the time scale (the pseudo-period) ...

Journal: :Symposium - International Astronomical Union 1993

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده کشاورزی 1390

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم 1391

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...

Journal: :مجله بهداشت محیط و توسعه پایدار 0
ali nikoonahad phd candidate ,environmental science and technology research center, department of environmental health engineering, school of public health, shahidsadoughi university of medical sciences, yazd, iran. asghar ebrahimi assistant professor, environmental science and technology research center, department of environmental health engineering, school of public health, shahidsadoughi university of medical sciences, yazd, iran. elyas nikoonahad msc, islamic azad university of zahedan, iran. vahid ghelmani msc, islamic azad university of yazd, responsible director of yazd wastewater treatment plants, yazd, iran. amir mohammadi phd candidate ,environmental science and technology research center, department of environmental health engineering, school of public health, shahidsadoughi university of medical sciences, yazd, iran.

introduction:expensive chemical tests are usuallyapplied to control the efficiency of wastewater treatment plants. however, the cost of measuring these parameters is one of the challenges of the wastewater treatment plants. using statistical methods has been evaluated for possibility of calculating expensive parameters by measuring the inexpensive parameters in this study. methods:initial sampl...

Journal: :Journal of the Acoustical Society of Japan (E) 1998

Journal: :Progress in Electromagnetics Research C 2022

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