We consider the effect of labor market rigidities on human capital accumulation and economic growth when some human capital is difficult to observe prior to employment. We distinguish between two types of human capital, those that formal schooling and test scores can measure (“knowledge”) and those that can be observed by employers only after a period of employment (“creativity”). We build a si...

This paper develops a theory of the endogenous formation of a common market in a three–country, n factor political economy model. Ex ante policies in each of the prospective members are the result of direct democracy, and equilibrium outcomes may include both import restrictions as well as subsidies. The decision to join a common market is modelled as a simultaneous move game between the two pr...

In this study, the effect of plant growth regulators on callogenesis and gametic embryogenesis from anther cultures of cucumber (Cucumis sativus L.) was investigated. A factorial experiment based on Completely Randomized Design with three replications was used in this study. Two cultivars of cucumber (Beta Alfa and Esfahani) were used as first factor and 11 hormone treatments including: control...

Chemical contamination of aquatic environments to EDCs has become a major focus of environmental toxicology research. The exposure of fishes to estrogenic EDCs in aquatic environments is most frequently assessed by analyzing Vitellogenin (Vg) (the egg yolk precursor protein) expression. Therefore, characterization of Vg gene is of high priority for EDCs bio-monitoring. So, we prepared liver tis...

The problem is related to all-or-nothing transforms (AONT) suggested by Rivest as a preprocessing for encrypting data with a block cipher. Since then there have been various applications of AONTs in cryptography and security. D’Arco, Esfahani and Stinson posed the problem on the constructions of binary matrices for which the desired properties of an AONT hold with the maximum probability. That ...

Zohreh Ghoreishi ([email protected]) Ali Esfahani ([email protected]) Abolghasem Djazayeri ([email protected]) Mahmoud Djalali ([email protected]) Banafsheh Golestan ([email protected]) Hormoz Ayromlou ([email protected]) Shahriar Hashemzade ([email protected]) Mohammad Asghari Jafarabadi ([email protected]) Vahid Montazeri ([email protected]) Seyed A...

The Iranian Persian chub is an endemic species of the family Cyprinidae known only from few localities in drainages of Southern Iran. It was originally described in the genus Pseudophoxinus as (Pseudophoxinus persidis) and then Petroleuciscus (as Petroleuciscus persidis). In this study, we examined phylogenetic relationships of the Iranian Persian chubwith other relatives in the family Cyprinid...