Rice comes second after wheat in Iran`s food consumption economy. However Iran is one of the greatest rice importer countries all over the world because of its rising population and recent growth in GDP. This paper presents an analysis of cointegration test between rice import and it`s economic factors over the period 1990-2011, employing Engle-Granger model. At first, Dickey-Fuller test shows ...

The present study was an attempt to identify a model of the political and socio-economic factors influencing Iranian EFL learners’ motivation to learn English. To achieve this, 20 EFL learners were interviewed about their motivation of learning English and based on these interviews, a questionnaire was designed and piloted among 221 EFL learners. Exploratory factor analysis w...

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A new approach to choosing the optimum design of reciprocating compressors is discussed. Economic criteria ore included together with optimisation procedures which account far thermodynamic criteria of performance, These procedures are applied to a mathematical model of a compressor to produce a "best" design. Such factors as initial cost, interest rates, depreciation, inflation, running costs,...

The spectacular revival of economic sociology in the US in the 1980s and in Europe at the beginning of the 21st century will be regarded as part of a paradigm shift in social sciences. Whereas classical sociology almost always dealt with normatively defined situations and value-based actions in which individual decisions, interests, and other situational aspects disappear from view, neo-classic...

Over the last four years efforts have been devoted towards the development and validation of mechanical test result models relating to a range of alloy steels. Several neural-network based models have been developed, two of which are related to the mechanical test results of Ultimate Tensile Strength (UTS), Reduction of Area (ROA), Elongation, etc. The ultimate aim of developing these models is...

Prosthodontics represents a highly developed body of knowledge and skill that spans multiple disciplines. Numerous studies can be cited that address biologic, mechanical, or materials science factors that influence decisions about patient care. On a daily basis as clinicians, teachers, or patients, we experience an interplay of social, economic, and psychologic conditions that similarly influen...

An understanding of factors related to trends in the incidence of personal nonbusiness bankruptcy is important to credit managers as well as to economists. This study updates and extends to 1982 an earlier study of economic factors associated with the incidence of bankruptcy from 1950 to 1970. This study shows that the incidence of personal bankruptcy follows movements in a measure of the aggre...