this paper estimates a structural cointegrating varx model with exogenous variables for iran. the long-run macroeconomic relationships are identified and tested within this framework. we make use of the generalized forecast error variance decomposition to analyze the dynamic properties of the model in response to different shocks. we also examine via the persistence profiles, the speed of adjus...

this paper examines the impact of 2005 presidential election of iran on the tehran stock exchange volatility as a political shock. it uses garch family (fiegarch, egarch, and garch) and markov regime switching (mrs) models as the analytical frameworks for the main the stock daily prices index. our findings confirm statistical validity of arima – fiegarch-x and ar(1) mrs as appropriate specifica...

the purpose of this article is the measurement of technical efficiency and returns to scale using data envelopment (dea) approach. in this study, we have measured efficiency quantity and economies of scale for state owned insurance and private companies for 1384-1385 periods. the results reveal that in the dea with the assumption of variable returns to scale, iran, tosee and razi companies have...

This paper explores integrable structures of a generalized melting crystal model that has two q-parameters q1, q2. This model, like the ordinary one with a single q-parameter, is formulated as a model of random plane partitions (or, equivalently, random 3D Young diagrams). The Boltzmann weight contains an infinite number of external potentials that depend on the shape of the diagonal slice of p...

We use the venerable “fooling set” method to prove new lower bounds on the quantum communication complexity of various functions. Let f : X × Y → {0, 1} be a Boolean function, fool1(f) its maximal fooling set size among 1-inputs, Q1(f) its one-sided-error quantum communication complexity with prior entanglement, and NQ(f) its nondeterministic quantum communication complexity (without prior enta...

the main purpose of this paper is to present methods and recent development in the literature of intra industry trade (iit) measuring. the case study also is carried out for iranian manufacturing industries during time period 1997-2003. for this, iran's foreign trade data was collected, processed, and then used to estimate iit indices with respect to recent literature developments in iit m...

development projects in natural water resources like rivers and lakes, specially transferring water to use in agriculture, domestic and industrial sector without considering environmental values, causes irrecoverable and irreversible damage to ecosystem and future options. if we consider the future generation and species rights, those damages and costs can be very much than we take in. the abov...

depending on the assumptions that are made in new keynesian models, one can attain different new keynesian phillips curves. in this study, three different new keynesian phillips curves and two different central bank behavioural functions are presented which leaves six new keynesian dsge models to study. the purpose of this study is the comparison of these six models and selecting the best model...