نتایج جستجو برای: return and volatility spillovers are important for portfolio selection
تعداد نتایج: 19189891 فیلتر نتایج به سال:
Financial theory suggests residual volatility should not be related to expected returns due to diversification. A robust portfolio construction process reduces volatility by investing in a large number of assets that span different geographies and industries. Firm-specific volatility largely washes out. What is left is systematic volatility related to common sources of return variation. Wes Cri...
increasing academic and professional language demands around the world are not a deniable fact. the purpose of this study was to investigate english language needs and communication needs of the chemistry students at master and ph.d. levels at the iranian universities. in this research, different methods were used including un-structured interview, structured interview, and two sets of question...
?it is of utmost priority for an experienced teacher to train the mind of the students, and enable them to think critically and correctly. the most important question here is that how to develop such a crucial ability? this study examines a new way to the development of critical thinking utilizing critical discourse analytical tools. to attain this goal, two classes of senior english la...
the following question poped up: is there any relationship between iranian high school efl learners reading comprehension and listening comprehension? then the following null hypothesis (ho) was developed to the test the above, mentioned question. "there is no relationship between high school efl learners reading comprehension and listening comprehension. for nearly 16 weeks, the experimental g...
The mean-variance methodology for the portfolio selection problem, originally proposed by Markowitz, has been one of the most important research fields in modern finance. In this paper we will assume that (i) each investor can assign a welfare, or utility, score to competing investment portfolios based on the expected return and risk of the portfolios; and (ii) the rates of return on securities...
the present study aimed at exploring cognitions of iranian english teachers within the context of english for academic purposes (eap). to this end, the cognitions of two groups of eap teachers with respect to their pedagogical content knowledge (pck) and their sense of professional identity (pi) were probed. two language teachers and two content instructors who had at least five years of eap te...
after the soviet union dissolution, a chaotic period was begun in the russia. russia lost its glory and felt disgrace. the first group of elites came to power under yeltsin; they tried to re-define russia’s identity as a european country and build a foreign policy on this baseline. therefore russia tried to become closer with the west especially with the u.s. according to their view the sovie...
Risk management is crucial for optimal portfolio management. One of the fastest growing areas in empirical finance is the expansion of financial derivatives. The purpose of this special issue on “Risk Management and Financial Derivatives” is to highlight some areas in which novel econometric, financial econometric and empirical finance methods have contributed significantly to the analysis of r...
In this paper, we discuss a multiperiod portfolio selection problem with fuzzy returns. We present a new credibilitic multiperiod mean semi- absolute deviation portfolio selection with some real factors including transaction costs, borrowing constraints, entropy constraints, threshold constraints and risk control. In the proposed model, we quantify the investment return and risk associated with...
این مطالعه اثر بحران های مالی بر انتقال تکانه و سرریز نوسانات میان بازارهای بورس در کشورهای توسعه یافته، نوظهور و ایران را طی دوره زمانی 2017-2003 بصورت روزانه مورد بررسی قرار داده است. برای این منظور جهت شناسایی بحران های مالی در بازارهای مالی، ابتدا تغییرات ساختاری موجود در نوسانات را با استفاده از الگوریتم اصلاح شده مجموع مربعات تجمعی تکراری به طور درون زا شناسایی شناسایی شده است؛ سپس با اس...
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