Results 11 to 20 of about 38,888 (250)

Studying the effects of USING GARCH-EVT-COPULA METHOD TO ESTIMATE VALUE AT RISK OF PORTFOLIO [PDF]

open access: yesIranian Journal of Finance, 1999
Value at Risk (VaR) plays a central role in risk management. There are several approaches for the estimation of VaR, such as historical simulation, the variance-covariance and the Monte Carlo approaches. This work presents portfolio VaR using an approach
Ghodratollah Emamverdi
doaj   +1 more source

Carpo-metacarpal dislocation treatment

open access: yesPAMJ Clinical Medicine, 2020
We report the case of a young patient of 24 years, motorcyclist, victim of road accident, causing a closed trauma of the right wrist, the examination on admission finds a swollen, painful hand without vascular-nervous disorders, or compartment syndrome ...
Oussama Eladaoui, Abdelhak Garch
doaj   +1 more source

Extreme Value Theory and Value at Risk: Application to OPEC Market [PDF]

open access: yesPizhūhishnāmah-i Iqtiṣād-i Inirzhī-i Īrān, 2019
Regarding the role of the energy market, especially oil, on the economy of countries, it is important to identify the future evolution of the market. In this respect, predicting the changeable extreme evolution of the oil price is crucial for decision ...
mahtab mehrasa, Teymour Mohamadi
doaj   +1 more source

An exceptional localization of hydatidosis

open access: yesPAMJ Clinical Medicine, 2020
A 48-years-old woman, presenting a huge mass of the posterior surface of the thigh, fixed on the deep and superficial planes, evolving for 1 year. The patient has no particular pathological history, and no other signs were noted, including neither weight´
Oussama Eladaoui, Abdelhak Garch
doaj   +1 more source

GARCH models without positivity constraints: Exponential or log GARCH? [PDF]

open access: yesJournal of Econometrics, 2013
This paper provides a probabilistic and statistical comparison of the log-GARCH and EGARCH models, which both rely on multiplicative volatility dynamics without positivity constraints. We compare the main probabilistic properties (strict stationarity, existence of moments, tails) of the EGARCH model, which are already known, with those of an asymmetric
Francq, Christian   +2 more
openaire   +4 more sources

Multivariate GARCH Models [PDF]

open access: yesSSRN Electronic Journal, 2008
This article contains a review of multivariate GARCH models. Most common GARCH models are presented and their properties considered. This also includes nonparametric and semiparametric models. Existing specification and misspecification tests are discussed.
Silvennoinen, Annastiina   +1 more
openaire   +3 more sources

Estimating Value at Risk of Portfolio of Oil and Gold by Copula-GARCH Method [PDF]

open access: yesتحقیقات مالی, 2014
Copula functions are powerful tools that describe dependence structure of multi- dimension random variables and are considered as one of the newest tools for risk management.
Saeed Fallahpour, Ehsan Ahmadi
doaj   +1 more source

The impact of United States macroeconomic news announcements on the Johannesburg Stock Exchange

open access: yesActa Commercii, 2023
Orientation: Macroeconomic news announcement poses a risk to stock returns, especially that of United States (US) on emerging markets because of globalisation.
Chad V. Alfonso   +2 more
doaj   +1 more source

Empirical performance of GARCH, GARCH-M, GJR-GARCH and log-GARCH models for returns volatility

open access: yesJournal of Physics: Conference Series, 2019
Abstract Volatility plays an important role in the field of financial econometrics as one of the risk indicators. Many various models address the problem of modeling the volatilities of financial asset returns. This study provides a new empirical performance comparison of the four different GARCH-type models, namely GARCH, GARCH-M, GJR ...
D B Nugroho   +5 more
openaire   +1 more source

Real exchange rate volatility and exports: A study for four selected commodity exporting countries [PDF]

open access: yesPanoeconomicus, 2019
Commodity exports depend on global demand and prices, but the increasing volatility of real exchange rates (RER) introduces an additional factor. Thus, this paper studies the RER volatility dynamics, estimated through GARCH and IGARCH models for Brazil ...
Mordecki Gabriela, Miranda Ronald
doaj   +1 more source

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