abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...

this ethnographic case study research was carried out in a private school setting in the context of iran. the research tried to explore the analysis and identity construction of a group of learners and teachers along with the content analysis of books on the basis of four types of commodified, political, national and narrative identities. how english language learners and teachers in an informa...

Applied ethics is a major having a significant role in attracting the attention of the intellectuals and even the public readers regarding the importance of ethical discussions including discussions of the ethical philosophy. However, since only four decades have been passed from the contemporary approach of the scholars of ethics in this field, it is still considered to be a new and evolving d...

writing as a productive skill requires practice in the basic sub-skills of vocabulary and grammar. in fact, grammar has been viewed as the core of programs in writing classes to help the students put the elements of sentence together and combine sentences of specific lengths to come up with an error-free work of art. conceptualizing l2 writing in this way introduces writing as a product and enc...

Applying Norman Fairclough's method, this article studies Imam Khomeini's discourse of exportation of Islamic revolution and tries to answer this question that with what presumptions and implications has discourse of exportation of Islamic revolution has entered public opinion and has attracted people? This article proves that interactive relation between text and context and emphasis on Islami...

With the expansion of Islamic Awakening all around the Middle Eadt, due to the Islamic Republic of Iran's potntiality for discourse-making, the political and strategic equations of the region have been developped fundamentally so that a new geometry of power is being formed in the region. In parallel with the  role of State actors in the new perspective of the Middle East, the influence of the ...

since esp received universal attention to smooth the path for academic studies and productions, a great deal of research and studies have been directed towards this area. swales’ (1990) model of ra introduction move analysis has served a pioneering role of guiding many relevant studies and has proven to be productive in terms of helpful guidelines that are the outcome of voluminous productions ...

one of the most important number sequences in mathematics is fibonacci sequence. fibonacci sequence except for mathematics is applied to other branches of science such as physics and arts. in fact, between anesthetics and this sequence there exists a wonderful relation. fibonacci sequence has an importance characteristic which is the golden number. in this thesis, the golden number is observed ...

Although the followers of Frankfurt school didn’t enter geopolitics domain directly, their theoretical subjects could lead to outline “critical geopolitics or resistance”. The basis of this new form of geopolitics concept is the confrontation with the official and dominant discourses . Accordingly, a perception of geopolitics concept can be proposed which is space-bound, as opposed to the class...

although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...