نتایج جستجو برای: instability indices

تعداد نتایج: 172006  

In this paper, the collisional filamentation instability of an electron beam-weakly magnetized and ionized plasma has been investigated in the presence of background plasma, using the fluid description. By describing the equilibrium configuration in the presence of binary collision terms between charged and neutral particles and using the local approximation method, the dispersion relation (DR)...

Exchange rate instability brings about significant changes in the domestic and foreign sectors that can impose negative effects on the whole economy. The present study investigates the effect of exchange and inflation rate instability on the lending behavior of Iranian banks by using data of the 10 banks over the time period 1382-1397(2003-2018). To do this, at first, a GARCH(1,1) of the exchan...

جعفری, فرهنگ , زارع‌کیا, صدیقه, غلامی, پرویز , فیاض, محمد, گودرزی, محمود ,

Livestock grazing is a common human-induced activity with direct and indirect effects even on the ecosystems of protected areas. The present study analyzed the effects of different grazing management methods on species diversity and richness in the steppe rangelands of Saveh, Iran. Data were collected from sixty 2×2 m plots within the areas of three, four-years protected range management projec...

Journal: :Revista galega de economía 2022

Understanding the linkages among stock markets holds great importance for investors, policymakers and portfolio managers. When considering integration of international given they are complex systems, it is important to understand how related influence each other. Studying data from 25 European Union market indices, this piece research aims evaluate dynamics them. In terms method, a non-linear a...

Asiyeh Azizi, Mohammadreza Zare Mehrjerdi Zahra Korooni

Among agricultural products in Iran, pistachio is one of the major export products that can produce foreign currency. The present study evaluated factors affecting pistachio export earnings instability and its effect on agricultural export during the studied period. For this purpose, export earnings instability index was calculated using "average absolute difference between export earnings and ...

Journal: :TYCHE – Contributions to Ancient History, Papyrology and Epigraphy 2017

The presence of van der Waals (vdW) force can lead to mechanical instability in freestanding nano-scale actuators. Most of the previous researches in this area have exclusively focused on modeling the instability in actuators with one actuating components. While, less attention has been paid to actuators consist of two actuating components. Herein, the effect of the vdW force on the instability...

Journal: :دانش سیاسی 0
محمدباقر خرمشاد دانشیار گروه علوم سیاسی دانشگاه علامه طباطبایی (نویسنده مسئول). عبدالمحمود محمدی لرد دانشجوی دکتری علوم سیاسی دانشگاه علامه طباطبایی

most theories in social sciences have aspects of causality, but understanding the causes of social phenomena is not possible through statistical correlation tests. to overcome this problem, fuzzy qualitative comparative analysis was developed to identify the cause of social phenomena. having qualitative roots, this method tests the necessary and sufficient causes for the emergence of a social p...

Journal: :medical journal of islamic republic of iran 0
mehdi nikbahkt dastjerdi dept. of anatomical sciences, medical school, isfahan university of medical sciences, isfahan,iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (isfahan university of medical sciences) masoumeh faghani dept. of anatomical sciences, medical school, guilan university of medical sciences, rasht, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی گیلان (guilan university of medical sciences) mansour salehi dept. of genetics, medical school, isfahan university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (isfahan university of medical sciences) mohammad rabbani dept. of biotechnology, pharmacy school, isfahan university of medical sciences.سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (isfahan university of medical sciences)

abstract   background: the polymorphic variants at codon 72 of the p53 gene, encoding either proline or arginine at residue 72, produce marked change in the structure of p53. from the evidence that the dnamismatch repair system and p53 interact to maintain genomic integrity, we hypothesized that the codon 72 variation may influence the prevalence of microsatellite instability a feature of malig...

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