نتایج جستجو برای: 3 for neutral
تعداد نتایج: 10980571 فیلتر نتایج به سال:
A sensitivity study of the neutral-neutral reactions C + C 3 and C + C 5 in cold dense interstellar clouds ABSTRACT Aims. Chemical networks used for models of interstellar clouds contain many reactions, some of them with poorly determined rate coefficients and/or products. In this work, we report a method for improving the predictions of molecular abundances using sensitivity methods and ab ini...
We prove that the Omega measure, which considers all moments when assessing portfolio performance, is equivalent to the widely used Sharpe ratio under jointly elliptic distributions of returns. Portfolio optimization of the Sharpe ratio is then explored, with an active-set algorithm presented for markets prohibiting short sales. When asymmetric returns are considered, we show that the Omega mea...
Tax evasion is one of the most important problems of tax system in the most countries around the world. It covers any unlawful attempt to avoid paying taxes. In present study, the affective factors on tax evasion based on experts’ views were extracted by using Delphi method, so we identified 29 factors and finally 16 factors were extracted based on measurement ability among them. The statistica...
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