Results 1 to 10 of about 71 (70)
A New Optimal Diagnosis System for Coronavirus (COVID-19) Diagnosis Based on Archimedes Optimization Algorithm on Chest X-Ray Images. [PDF]
Comput Intell Neurosci, 2021 The new coronavirus, COVID‐19, has affected people all over the world. Coronaviruses are a large group of viruses that can infect animals and humans and cause respiratory distress; these discomforts may be as mild as a cold or as severe as pneumonia. Correct detection of this disease can help to avoid its spreading increasingly.
Chen L, Rezaei T, Rezaei T.
europepmc +2 more sources
Mathematical Problems in Engineering, Volume 2023, Issue 1, 2023., 2023 In this work, a lower limb exoskeleton with uncertainties and external disturbances under constrained motion has been controlled by developing a model‐free adaptive optimal fractional‐ordersuper‐twisting sliding mode (AOFSTSM) controller. Contrary to popular existing modeling methods, the modeling of the lower limb exoskeleton has been accomplished in ...
Mohammad A. Faraj +4 more
wiley +1 more source
Model‐based online efficiency control of induction motor drives based on nonlinear technique
IET Electric Power Applications, Volume 16, Issue 10, Page 1223-1231, October 2022., 2022 Abstract To accomplish benefits such as high accuracy and fast response, the model‐based loss minimisation algorithms (LMAs) are introduced in the literature, as one of the main available techniques for minimising power losses in electrical motors. They are appropriate for dynamic applications, which necessitate very fast update of the control variable.
Hamidreza Mosaddegh Hesar +2 more
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 In this research work, an advanced wireless communication‐based crank slider mechanism for multiparameter friction techniques is analyzed. The earlier models are unable to find exact friction; therefore, a correct crank function cannot be identified. The dynamic crank sliding mechanism is required for advanced mechanical applications.
Qian Jing, Deepak Kumar Jain
wiley +1 more source
A Theory Approach towards Tradable Rail Freight Option
Discrete Dynamics in Nature and Society, Volume 2021, Issue 1, 2021., 2021 For railway freight pricing, this paper proposes a new tradable rail freight option (RFO). A multiphase trigeminal tree pricing model is established to analyze the optimal pricing decision of RFO. The main parameters of the model are identified theoretically through nonparametric Ito stochastic approach.
Jingwei Guo +6 more
wiley +1 more source
Modeling Previous Trial Effect in Human Manipulation through Iterative Learning Control
Advanced Intelligent Systems, Volume 2, Issue 9, September 2020., 2020 Three mathematical models are proposed to predict learning‐by‐repetition human behavior in a balance task with an object of unexpected mass distribution. Models combine reactive terms, learned anticipatory action, featuring intratrial and intertrial memory, and the effect of sensory receptors.
Lorenzo Cenceschi +7 more
wiley +1 more source
Stackelberg Game Model of Railway Freight Pricing Based on Option Theory
Discrete Dynamics in Nature and Society, Volume 2020, Issue 1, 2020., 2020 In recent years, although rail transport has contributed significantly to the productivity of the Chinese economy, it has also been faced with the fierce competition and challenge from other modes of transportation, and therefore, freight‐pricing issue has received more attention by researchers.
Jingwei Guo +3 more
wiley +1 more source
General Quadratic‐Additive Type Functional Equation and Its Stability
International Journal of Mathematics and Mathematical Sciences, Volume 2016, Issue 1, 2016., 2016 We investigate the general functional equation of the form f(ax + by + cz) − abf(x + y) − bcf(y + z) − acf(x + z) − a((a + 1)/2 − b − c)f(x) − b((b + 1)/2 − a − c)f(y) − c((c + 1)/2 − a − b)f(z)−(a(a − 1)/2) f(−x) − (b(b − 1)/2) f(−y)−(c(c − 1)/2 )f(−z) = 0, whose solutions are quadratic‐additive mappings in connection with stability problems.
Yang-Hi Lee +2 more
wiley +1 more source
Numerical Reduced Variable Optimization Methods via Implicit Functional Dependence with Applications
Abstract and Applied Analysis, Volume 2014, Issue 1, 2014., 2014 A systematic theoretical basis is developed that optimizes an arbitrary number of variables for (i) modeling data and (ii) the determination of stationary points of a function of several variables by the optimization of an auxiliary function of a single variable deemed the most significant on physical, experimental or mathematical grounds from which ...
Christopher Gunaseelan Jesudason +1 more
wiley +1 more source
Coefficient subrings of certain local rings with prime‐power characteristic
International Journal of Mathematics and Mathematical Sciences, Volume 18, Issue 3, Page 451-462, 1995., 1994 If R is a local ring whose radical J(R) is nilpotent and R/J(R) is a commutative field which is algebraic over GF(p), then R has at least one subring S such that , where each Si, is isomorphic to a Galois ring and S/J(S) is naturally isomorphic to R/J(R). Such subrings of R are mutually isomorphic, but not necessarily conjugate in R.
Takao Sumiyama
wiley +1 more source