in this study, we examined the chromosome number, detailed male meiosis, microsporogenesis, pollen fertility and distribution of cytotypes of diplotaxis harra (forssk.) boiss. this is the first cytogenetic report of the taxon. the two of the populations scored now from regions of the central showed aneuploid (x = 14) meiotic chromosome count and one of the populations studied from the existed a...

I study the social value of information in a New Keynesian model of monopolistic pricesetting with dispersed information, where the central bank can choose what information to share with the public. Under flexible prices, more disclosure is welfare improving: it reduces price dispersion and moves the economy closer to the first-best allocation. Under Calvo [1983] price stickiness, however, disc...

Even though we have seen an exponential growth in the number of Web sites and the number of users, little is known about Web usage at the level of the individual. This paper aims to overcome this lack of knowledge on individual usage patterns. Based on previous findings on saturation of Web usage, we use data from 1995-1998 on residential Web usage conducted as part of the HomeNet project to ex...

Genomic DNA contains sequences that are relics of evolution together with functional protein sequences and regulatory operands. The mutual relationship of chromosomes that constitute the genome is of interest from the viewpoint of evolution as well as from that of systems biology. Chromosome origin, the frequency of chromosomal alteration, and the nature of these alterations can be addressed by...

Consumers with online shopping experience often stick to some special websites. Does it mean that long-term relationships between consumers and the websites form? To solve the problem, this paper analyzed the belief and attitude factors influencing online consumer stickiness intention. Based on the relationships between belief-attitude-intention implied in TPB (Theory of Planned Behavior), acco...

Understanding the degree of price stickiness and the nature of price setting is necessary for analyzing the effects of monetary policy on economy. To the best of our knowledge, no comprehensive study has examined the degree of price stickiness in Iran yet. For this reason, we examine the basic features of retail price setting behavior using a large data set containing the micro data underly...

Among mainstream academic economists and policymakers, the leading alternative to the real business cycle theory is the New Keynesian model. Whereas the real business cycle model features monetary neutrality and emphasizes that there should be no active stabilization policy by governments, the New Keynesian model builds in a friction that generates monetary non-neutrality and gives rise to a we...

This study aims to evaluate the effect of sentiments on Iran's economy through a New Keynesian Dynamic Stochastic General Equilibrium model in a closed economy. In this study, the coefficients of the proposed model are calibrated and estimated using the quarterly data of Iran's economy from 2004 to 2015. It shows that in the presence of sentiment, how stochastic impulses affect the main macroec...