Search Results - subject:"amplitude"

Quadratic shrinkage for large covariance matrices

Ledoit, Olivier; Wolf, Michael - 2019

This paper constructs a new estimator for large covariance matrices by drawing a bridge between the classic Stein (1975) estimator in finite samples and recent progress under large-dimensional asymptotics. Our formula is quadratic: it has two shrinkage targets weighted by quadratic functions of...

Persistent link: https://www.econbiz.de/10012140662

Quadratic shrinkage for large covariance matrices

Ledoit, Olivier; Wolf, Michael - 2019

Persistent link: https://www.econbiz.de/10012123359

Non-orthogonal filter bank multi carrier systems with higher overlap factor filters for 5G communications and beyond

Yarrabothu, Ravi Sekhar; Nelakuditi, Usha Rani - In: International journal of networking and virtual … 23 (2020) 4, pp. 373-389

Persistent link: https://www.econbiz.de/10012515571

Stock index options pricing under jump patterns driven by market states

Lin, Chao-Yang; Liu, Huimei; Lee, Jia-Ching; Lin, Shih-kuei - In: Emerging markets, finance & trade : a journal of the … 56 (2020) 4, pp. 840-859

Persistent link: https://www.econbiz.de/10012211508

Retail store churn and performance : the moderating role of sales amplitude and unpredictability

Patel, Pankaj C.; Struckell, Elisabeth M.; Ojha, Divesh; … - In: International journal of production economics 222 (2020), pp. 1-15

Persistent link: https://www.econbiz.de/10012233089

Information money fields of cyclic oscillations in nonlinear dynamic economic system

Ledenyov, Dimitri O.; Ledenyov, Viktor O. - Volkswirtschaftliche Fakultät, … - 2015

Article introduces the notion of information money fields of the cyclic oscillations of the economic variables in the nonlinear dynamic economic system for the first time, and presents an original research on the Ledenyov theory on the information money fields of the cyclic oscillations of the...

Persistent link: https://www.econbiz.de/10011251895

Information money fields of cyclic oscillations in nonlinear dynamic economic system

Ledenyov, Dimitri O.; Ledenyov, Viktor O. - Volkswirtschaftliche Fakultät, … - 2015

Persistent link: https://www.econbiz.de/10011251900

Amplitude of weighted representation of voting games with several levels of approval

Engoulou, Bertrand Mbama; Lambo, Lawrence Diffo - In: International journal of game theory : official journal … 48 (2019) 4, pp. 1111-1137

Persistent link: https://www.econbiz.de/10012311375

Real-Time Estimation of Power System Frequency Using a Three-Level Discrete Fourier Transform Method

Nam, Soon-Ryul; Kang, Seung-Hwa; Kang, Sang-Hee - In: Energies 8 (2014) 1, pp. 79-93

-filtered signals. The second and third levels are used to determine the amplitude ratio of the cosine- and sine-filtered signals …

Persistent link: https://www.econbiz.de/10011105441

Geometrically Non-Linear Frequency Response of Axially Functionally Graded Beams Resting on Elastic Foundation Under Harmonic Excitation

Lohar, Hareram; Mitra, Anirban; Sahoo, Sarmila - In: International Journal of Manufacturing, Materials, and … 8 (2018) 3, pp. 23-43

satisfied at a maximum excitation amplitude value. Thus, the dynamic problem is equivalently represented as a static one, which … and subsequent correction of the initial Jacobian to solve a system of nonlinear equations. The large amplitude dynamic …

Persistent link: https://www.econbiz.de/10012046660