نتایج جستجو برای: مدل arx

تعداد نتایج: 120915  

2005
Sung Eun Kim Ashok Kumar

Due to the nonlinear feature of a ozone process, regression based models such as the autoregressive models with an exogenous vector process (ARX) suffer from persistent diurnal behaviors in residuals that cause systematic over-predictions and under-predictions and fail to make accurate multi-step forecasts. In this article we present a simple class of the functional coefficient ARX (FARX) model...

Journal: :Electronics 2022

A pipe is a ubiquitous product in the industries that used to convey liquids, gases, or solids suspended liquid, e.g., slurry, from one location another. Both internal and external cracking can result structural failure of industrial piping system possibly decrease service life equipment. The chaos complexity associated with uncertain behaviour inherent pipeline systems lead difficulty detectio...

Journal: :Mathematics 2022

Nature-inspired metaheuristic algorithms have gained great attention over the last decade due to their potential for finding optimal solutions different optimization problems. In this study, a based on dwarf mongoose algorithm (DMOA) is presented parameter estimation of an autoregressive exogenous (ARX) model. DMOA, set candidate were stochastically created and improved using only one tuning pa...

2017
Borhan M. Sanandaji Tyrone L. Vincent Michael B. Wakin Roland Tóth Kameshwar Poolla

In this paper, we consider identifying Auto Regressive with eXternal input (ARX) models for both Linear Time-Invariant (LTI) and Linear Time-Variant (LTV) systems. We aim at doing the identification from the smallest possible number of observations. This is inspired by the field of Compressive Sensing (CS), and for this reason, we call this problem Compressive System Identification (CSI). In th...

فرآیند تقطیر یک فرآیند صنعتی پیچیده و به شدت غیرخطی می‌باشد. به طور کلی پیدا کردن مدل دقیق تحلیلی از ستونهای تقطیر با خلوص بالا همواره امکان پذیر نمی‌باشد. از طرفی توسعه مدلهای تحلیلی معمولا وقت‌گیر و هزینه‌بر است. برای غلبه بر این مشکلات می‌توان از مدلهای تجربی نظیر شبکه‌های عصبی استفاده کرد. یکی از ایرادات اساسی شبکه‌های عصبی این است که پیش‌بینی‌های آن تنها در محدوده اطلاعات شناسایی معتبر است...

Journal: : 2022

در این پژوهش سعی می‌­شود مدلی برای شبیه‌­سازی چرخه عمر صنعت برق با استفاده از شبیه‌سازی عامل­بنیان ارائه شود، مدل، 5 عامل استخراج شد و شبیه­‌سازی به کمک نرم‌افزار Anylogic صورت پذیرفت. بهینه‌­سازی مدل چهار سناریو نظر خبرگان شد. سناریوی نخست، جذابیت نیروگاه گازی سیکل ترکیبی کاهش یافت بر دو دیگر افزوده نتیجه افزایش تولید آبی است که توجه کمبود منابع کشور به‌صرفه نیست. دوم ورود یک فناوری جدید میزان...

Journal: :Journal of neuroscience methods 2016
Mehak Sood Pierre Besson Makii Muthalib Utkarsh Jindal Stephane Perrey Anirban Dutta Mitsuhiro Hayashibe

BACKGROUND Transcranial direct current stimulation (tDCS) has been shown to perturb both cortical neural activity and hemodynamics during (online) and after the stimulation, however mechanisms of these tDCS-induced online and after-effects are not known. Here, online resting-state spontaneous brain activation may be relevant to monitor tDCS neuromodulatory effects that can be measured using ele...

2012
Vesselin Velichkov

Cryptography is the art and science of secret communication. In the past it has been exclusively the occupation of the military. It is only during the last forty years that the study and practice of cryptography has reached the wide public. Nowadays, cryptography is not only actively studied in leading universities as part of their regular curriculum, but it is also widely used in our everyday ...

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