background :comparing computer and internet based instruction with traditional giving lecture would provide enough evidence to identify best teaching practice. in this study, we compared lecture, interactive internet based and computer based learning regarding medical students' knowledge acquisition and satisfaction in teaching pathophysiology of hematology and oncology.   methods : eighty four...

The field of ELT is constantly witnessing the introduction of new instructional approaches: one such perhaps recent initiative is critical discourse analysis (CDA). Accordingly, the present study was an attempt to investigate the impact of CDA instruction on Iranian EFL learners’ descriptive and argumentative writing ability. To fulfill the aforementioned purpose, a sample TOEFL was primarily p...

The portfolio is a perfect combination of stock or assets, which an investor buys them. The objective of the portfolio is to divide the investment risk among several shares. Using non-parametric DEA and DEA-R methods can be of great significance in estimating portfolio. In the present paper, the efficient portfolio is estimated by using non-radial DEA and DEA-R models. By proposing non-radial m...

investors use different approaches to select optimal portfolio. so, optimal investment choices according to return can be interpreted in different models. the traditional approach to allocate portfolio selection called a mean - variance explains. another approach is markov chain. markov chain is a random process without memory. this means that the conditional probability distribution of the nex...

This paper considers a multi-objective portfolio selection problem imposed by gaining of portfolio, divided yield and risk control in an ambiguous investment environment, in which the return and risk are characterized by probabilistic numbers. Based on the theory of possibility, a new multi-objective portfolio optimization model with gaining of portfolio, divided yield and risk control is propo...

Most children in Ethiopia, especially from economically disadvantaged families, often have no exposure to English before school and learn government-sponsored public schools with insufficient resources, semi-qualified or unqualified non-native teachers poor teaching methods. Assessment results shown that Ethiopian children's reading performance is below the standards set for each grade level th...