with regard to the impossibility of preparing learners for each situation that they might encounter in their life, it is more logical to teach them how to cope with unexpected challenges. helping learners ‘learn how to help themselves’ can be facilitated by means of tasks and activities in the classroom context. this paper presents some of the find- ings of a study on iranian young learners bet...

this study aims at uncovering the effect(s) of genre-based instruction (gbi) on listening proficiency among iranian efl learners. moreover, it seeks to explore the relationship between effectiveness of gbi and listening proficiency. for this purpose, 68 efl learners in two different groups at zabol university were selected. group a included 30 participants (12 males and 18 females), and group b...

In this paper, the investment portfolio is formed based on the data mining algorithm of CHAID on the basis of the risk status criteria. In the next step, the second investment portfolio is created based on the decision rules extracted by the DEA-BCC model. The final portfolio is created through a two-objective mathematical programming model based on the Imperialist Competitive algorithm.

This paper consists of a review of current trends in web-based instruction and a review of a representative sample of web-based instruction efficacy research. The review of the current state of web-based instruction yields two principle themes: a) The prevalence of web-based instruction is growing exponentially, particularly in lifelong learning and corporate training; and b) The line between a...

This study aimed to investigate the washback effect of three alternative assessment procedures, namely oral-conferences, portfolios, and corpora-based feedback on the writing achievement and attitudes of Iranian EFL university learners. The participants taking part in the study were 156 native Iranian students in a mixed Reading-Writing course. Through the two three-month semesters, the learner...

The relevant literature showed that many heuristic techniques have been investigated for constrained portfolio optimization problem but none of these studies presents multi-objective Scatter Search approach. In this work, we present a hybrid multi-objective population-based evolutionary algorithm based on Scatter Search with an external archive to solve the constrained portfolio selection probl...

Investment has always been a course of knowledge, data and information. Different investors follow different investing strategies develop investment portfolios. Traditional portfolios seek for stability by diversifying the risks to products from wide range industries. However, in recent years, rise Information Technology industry encouraged more aggressive investments correspondingly portfolio ...

In this paper it is analyzed whether a Fourier based approach can be an efficient tool for calculating risk measures in the context of a credit portfolio model with integrated market risk factors. For this purpose, this technique is applied to a version of the well-known credit portfolio model CreditMetrics extended by correlated interest rate and credit spread risk. Unfortunately, the characte...