Results 91 to 100 of about 10,331,496 (319)
Matrix factorization for solutions of the Yang-Baxter equation
, 2015 We study solutions of the Yang-Baxter equation on a tensor product of an arbitrary finite-dimensional and an arbitrary infinite-dimensional representations of the rank one symmetry algebra.
Chicherin, D., Derkachov, S.
core +2 more sources
Energy Science &Engineering, EarlyView.ABSTRACT In this paper, a PLL‐less control technique for single‐phase grid‐connected voltage source converter (VSC) system is proposed that overcomes shortcomings in traditional PLL‐based and existing PLL‐less techniques. The proposed method avoids the use of a PLL and thus significantly decreases the computational complexity of the system as well as ...
Adnan Tan
wiley +1 more source
Some extremal functions in Fourier analysis, III
, 2008 We obtain the best approximation in $L^1(\R)$, by entire functions of exponential type, for a class of even functions that includes $e^{-\lambda|x|}$, where $\lambda >0$, $\log |x|$ and $|x|^{\alpha}$, where $-1 < \alpha < 1$.
A. Selberg +17 more
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Multiple Seasonal Autoregressive Integrated Moving Average Models
Journal of Forecasting, EarlyView.ABSTRACT Many empirical time series show periodic patterns. SARIMA models and exponential smoothing methods are classical approaches to account for seasonal dynamics. However, they allow to model just one periodic component, while several time series have multiple seasonality, with periodic components possibly tangled among them.
Francesco Lisi, Matteo Grigoletto
wiley +1 more source
Integrals with n-fractional differintegrals of trigonometrics functions
Revista Técnica de la Facultad de Ingeniería, 2011 Véase archivo ...
Josefina Matera, Susana Salina
doaj
Teaching Transformations of Trigonometric Functions with Technology
Journal of Interactive Media in Education, 2020 Trigonometry is integral to mathematics education. The field of trigonometry plays a crucial role in the study of mathematics and its applications. Despite the importance of the subject, students struggle to understand trigonometric constructs such as ...
Neil Bornstein
doaj +1 more source
Journal of Inequalities and Applications, 2016 In this paper, we present the monotonicity and absolute monotonicity properties for the two-parameter hyperbolic and trigonometric functions. As applications, we find several complete monotonicity properties for the functions involving the gamma function
Zhen-Hang Yang, Y. Chu
semanticscholar +1 more source
Perspective Projection of an Ellipse and an Ellipsoid for Analytical View Factor Evaluation
Heat Transfer, EarlyView.ABSTRACT Radiative view factors are fundamental quantities for evaluating radiative heat transfer between different surfaces. While analytical expressions of view factors have been evaluated for various types of basic geometries, including circular disks and spheres, extending these solutions to more complex geometries, such as ellipses and ellipsoids ...
Kaname Sasaki
wiley +1 more source
Boundedness of approximate trigonometric functions
Applied Mathematics Letters, 2009 AbstractIn this work, we prove that approximate trigonometric functions are bounded. That is, if a non-zero function f satisfies the inequality |f(x+y)−f(x−y)−2f(x)f(y)|≤φ(x) or φ(y), then f is bounded.
Gwang Hui Kim, Young Whan Lee
openaire +2 more sources
Optimising Beam Geometry in Orthopaedic X‐Rays: A Phantom Study
Journal of Medical Radiation Sciences, EarlyView.Antoni Cieszynski, a 19th‐century Polish dentist, developed the bisecting angle technique in 1907, which uses isometry rules to improve anatomical imaging accuracy in dentistry. Our experiment tested this technique on the radius bone at various angles, demonstrating that it significantly reduced elongation and distortion compared to traditional methods,
Jodie Ringin +3 more
wiley +1 more source