in this article using autoregressive (ar), autoregressive conditional heteroskedasticity (arch), generalized autoregressive conditional heteroskedasticity (garch) models we assess the weekend effect and also compare the trading patterns of individual and legal investors during 1381-1385 in tehran stock exchange. our findings suggest that weekend effect exists in tehran stock exchanges which are...

In 2000 Italy replaced its traditional system of severance pay for public employees with a new system. Under the old regime, severance pay was proportional to the final salary before retirement; under the new regime it is proportional to lifetime earnings. This reform entails substantial losses for future generations of public employees, in the range of €20,000-30,000, depending on seniority. U...

the oil refining industries are using a number of demulsifiers for dewatering and desalination of crude oil but experience has shown that universal demulsifiers can not be produced. each kind of water in oil (w/o) emulsion requires specific by composition demulsifier. in practice, synergetic effect of the interaction between different types of demulsifiers is often sought. for dewatering the w...

background: weak efficacy of different fasciolicidal compounds used for treatment of paramphistomosis has drawn the attention of many authors to alternative drugs. the purpose of this study was to assess, for the first time, the effect of the methanolic extract of balanites aegyptiaca fruits (bae) on adult paramphistomum microbothrium . methods : the effect of bae on adult p. microbothrium afte...

Corporate environments treat work activity related to processing information and the one of learning & professional training (L&T) separately, by keeping L&T on a low priority scale, and perceiving little dependency between both activities. Yet, our preliminary analysis of an organisation has revealed that both activities mutually affect each other. Wholes or parts of corporate information and ...

Radical-ion pairs are ubiquitous in a wide range of biochemical reactions, ranging from photosynthesis to magnetic sensitive chemical reactions underlying avian magnetic navigation. We here show that the charge recombination of a radical-ion-pair is a continuous quantum measurement process that interrogates the spin state of the pair. This naturally leads to the appearance of the quantum Zeno e...