نتایج جستجو برای: مدل bekk
تعداد نتایج: 120147 فیلتر نتایج به سال:
در این تحقیق به بررسی انتقال تلاطم و وابستگی بین چهار فلز گرانبهای اصلی یعنی طلا، نقره، پلاتین و پالادیم با استفاده از مدل گارچ چندمتغیره و همچنین بررسی تاثیر تکانهها بر تلاطم فلزات گرانبها با استفاده از رویکرد تابع ضربه واکنش تلاطم پرداخته شده است. نتایج مدل VAR(1)-BEKK(1,1) که با استفاده از دادههای هفتگی قیمت چهار فلز گرانبها برآورد شده، نشان داد وابستگی نسبتا زیادی بین بازدهها و تلاطم ای...
In this paper, we analyse co-movements and correlations between Bitcoin thirty-one of the most-tradable crypto assets using high-frequency data for period from January 2019 to December 2020. We apply Diagonal-BEKK model pre-COVID COVID-19 periods, identify significant changes in patterns during pandemic period. also employ Minimum Spanning Tree (MST) Planar Maximally Filtered Graph (PMFG) metho...
Þau tengsl sem unglingar mynda við flutning til nýs lands geta ráðið miklu um líðan þeirra og velferð. Markmið rannsóknarinnar var að varpa ljósi á vinatengsl eftir uppruna unglinga. Kannaður fjöldi vina af íslenskum erlendum stuðningur frá þeim, vinafjölda hlutfalls nemenda í skóla þátttakenda aldurs Íslands vinafjölda. Gögnum safnað með spurningalistakönnun lögð fyrir níu grunnskólum. Alls sv...
Abstract This paper investigates the linkage of returns and volatilities between United States Chinese stock markets from January 2010 to March 2020. We use dynamic conditional correlation (DCC) asymmetric Baba–Engle–Kraft–Kroner (BEKK) GARCH models calculate time-varying correlations these two examine return volatility spillover effects markets. The empirical results show that there are only u...
This paper modifies the BEKK-GARCH model based on empirical results of VAR to analyze dynamic volatility spillover effect between European Union allowance (EUA) and certified emissions reduction (CER) markets during second third phases Emission Trading System (EU ETS). The show that (1) an asymmetric exists EUA CER market has a more significant market, (2) becomes weaker in phase III since Comm...
This paper examines mean and volatility spillovers between three major cryptocurrencies (Bitcoin, Litecoin Ethereum) the role played by cyber-attacks. Specifically, trivariate GARCH-BEKK models are estimated which include suitably defined dummies corresponding to different types, targets number per day of Significant dynamic linkages (interdependence) under investigation found in most cases whe...
رابطهی شدت ترمولومینسانس براساس مدل سینتیک مرتبهی اول بدون در نظرگرفتن اثر فروکشی دمایی مورد استفاده قرار میگیرد. این حالی است که به عنوان یک واقعیت فیزیکی باید روابط بیانکنندهی توجه گیرد. کار با نظر گرفتن برای اول، تابع جداسازی منحنی تابش جدیدی برحسب و دمای قله دست آمد. نحوی جدید حذف مشخصههای دمایی، همان قبلی خود تبدیل میشود. دزیمتر (400TLD-) :Mn2CaF بررسی گرفت. اینکه شدت طبق ...
Hedging the risk of crude oil prices fluctuation for countries such as Iran that are highly dependent on oil export earnings is one of the important subject to discuss. In this regard, the main purpose of this study is to calculate and analyze the optimal dynamic hedging ratio for Iranian light and heavy crude oil spot prices based on one-month to four-month cross hedge contracts in New York St...
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