Results 11 to 20 of about 4,696 (207)

A mixed-copula-based integral method for reliability analysis of a novel multi-functional rescue end-effector

open access: yesAdvances in Mechanical Engineering, 2023
To improve the performance of a conventional rescue equipment, we designed a novel multi-functional rescue end-effector comprising a separation mechanism and a grasping mechanism.
Chunrong Wang   +3 more
doaj   +1 more source

Revisiting the Copula-Based Trading Method Using the Laplace Marginal Distribution Function

open access: yesMathematics, 2022
Pairs trading under the copula approach is revisited in this paper. It is well known that financial returns arising from indices in markets may not follow the features of normal distribution and may exhibit asymmetry or fatter tails, in particular.
Tayyebeh Nadaf   +2 more
doaj   +1 more source

Performance of Archimedean copula functions in annual flood estimation, Case study: Qarah-Soo Watershed [PDF]

open access: yesمخاطرات محیط طبیعی, 2017
Flood is known as one of the most devastating natural hazards which cause great damages to human societies, municipal, industrial and agricultural centers. Flood estimation in confluence points of rivers– for being the location for many infrastructures –
Sanaz Zeraati, Mohammad Zounemat-Kermani
doaj   +1 more source

TIME SERIES ANALYSIS USING COPULA GAUSS AND AR(1)-N.GARCH(1,1)

open access: yesMedia Statistika, 2016
In this case, the Gaussian Copula is used to connect the data that correlates with the time and with other data sets. Most often, practitioners rely only on the linear correlation to describe the degree of dependence between two or more variables; an ...
Rezzy Eko Caraka   +3 more
doaj   +1 more source

Modeling Insurance Claim Distribution via Mixture Distribution and Copula [PDF]

open access: yesتحقیقات مالی, 2017
This paper analyses whether joint probability distribution function of losses due to different exposures covered under the same policy could be modeled in an appropriate manner via mixture distribution proposed and copula concept.
Saeed Bajalan   +2 more
doaj   +1 more source

Correlation and distribution model for nonlinear strength parameters of rockfill based on Copula function

open access: yesYantu gongcheng xuebao, 2020
The uncertainty and correlation of nonlinear strength parameters of rockfill are the key factors affecting the stability reliability analysis results of rockfill dam slopes.
KONG Xian-jing 1, 2, SONG Lai-fu 1, XU Bin 1, 2, ZOU De-gao 1, 2
doaj   +1 more source

Estimation of Copula Density Using the Wavelet Transform

open access: yesمجلة بغداد للعلوم
This paper proposes a new method to estimate the copula density function using wavelet decomposition as a nonparametric method, to obtain more accurate results and address the issue of boundary effects that nonparametric estimation methods suffer from ...
Fatimah Hashim Falhi   +1 more
doaj   +1 more source

Penerapan Metode GARCH-Vine Copula untuk Estimasi Value at Risk (VaR) pada Portofolio

open access: yesJurnal Fourier, 2018
Salah satu alat ukur yang digunakan untuk menghitung risiko portofolio adalah Value at Risk (VaR). Beberapa metode pengukuran VaR mengasumsikan return berdistribusi normal dan ukuran dependensi antar saham menggunakan korelasi linear.
Herida Okta Pintari, Retno Subekti
doaj   +1 more source

Bivariate Flood Frequency Analysis Using the Copula Archimedean Function (Gumbel–Hougaard) [PDF]

open access: yesپژوهش‌های آبخیزداری, 2020
Flood is a multivariate and complex phenomenon that has a random nature. In conventional methods of flood frequency analysis, only flood peak variable is important and it is assumed that the variable under consideration follows a particular parametric ...
Mohammad Reza Goodarzi   +3 more
doaj   +1 more source

A COPULA APPLICATION FOR MECHANICAL PROPERTIES [PDF]

open access: yesFiabilitate şi Durabilitate, 2019
Based on copula applications, the work points out the use of cumulative distribution function for the characteristics bivariate cases and the connections among them.
Adrian Stere PARIS
doaj  

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