نتایج جستجو برای: linear model
تعداد نتایج: 2451721 فیلتر نتایج به سال:
evolving models have found applications in many real world systems. in this paper, potentials of the evolving linear models (elms) in tracking control design for nonlinear variable structure systems are introduced. at first, an elm is introduced as a dynamic single input, single output (siso) linear model whose parameters as well as dynamic orders of input and output signals can change through ...
spatial-temporal modeling of air pollutants, ground-level ozone concentrations in particular, has attracted recent attention because by using spatial-temporal modeling, can analyze, interpolate or predict ozone levels at any location. in this paper we consider daily averages of troposphere ozone over tehran city. for eliminating the trend of data, a dynamic linear model is used, then some featu...
چوب مرغوب و میوۀ عالی گردو از لحاظ اقتصادی دارای ارزش زیادی است، به طوری که از گذشته تا امروز به شدت ازآن بهره برداری شده و در قانون حفاظت از جنگل ها و مراتع، به عنوان گونۀ حفاظت شده معرفی شده است. عملکرد گونه های جنس گردو، به ویژه juglans regia در سال های مرطوب افزایش و در سال های خشک کاهش می یابد. از این رو توجه به شاخص های فیزیولوژیکی و مورفولوژیکی و شناسایی نواحی ژنومی دخیل در مقاومت به خشک...
a procedure is presented that synthesizes fractional crystallization separation processes to obtain pure solids from multi-component solutions. the method includes a procedure to generate a network flow model to identify alternative process designs for fractional crystallization. the main advantage of this systematic procedure with respect to other reported procedures is using non-equilibrium s...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
in this research genetic and phenotypic parameters were estimated using linear and threshold models, for reproductive traits, data from 6 large industrial dairy herd of east azerbaijan province collected by agriculture jihad organization during 10 years (2001-2010). best linear unbiased predictions of traits breeding values were estimated using restricted maximum likelihood method by wombat sof...
although, single-sided linear induction motor (slim) utilization has increased in railway applications due to their numerous advantages in comparison to rotational induction motors (rim), there are some sophistication in their mathematical models and electrical drive. this paper focuses on the problems of slim modeling, with assuming end-effect on the basis of field oriented control (foc) as a ...
abstract in current study, an irrigation examination and acquisition of environmental water in kor-river fields, that is dominated from doroudzan dam to bakhtegan lake, was done by an integrated economy-environmental model. the model was considered by economic, hydrologic and agronomic components. in the economic component, an optimal harvesting of water was done using non-linear programming in...
با توجه به کاربرد روز افزون توابع گویا (rational functions) در تصویرسنجی (فتوگرامتری) این معادلات مورد توجه محققان زیادی است. یکی از معایب این معادلات، ناپایداری مدل در برآورد پارامترها یا همان ضرایب است. در واقع مسئله برآورد ضرایب توابع گویا rfcs) rational function coefficients,) با استفاده از نقاط کنترل موجود در اغلب موارد یک مسئله ای بدطرح (ill-posed) است که باید روشی را برای پایدارسازی (reg...
research interests have been focused on the concept of penalizing jobs both for being early and for being tardy because not only of modern competitive industrial challenges of providing a variety of products at a very low cost by smoothing productions but also of its increasing and exciting computer applications. here, sequencing approaches of the mixed- model just-in-time production systems is...
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