insurers have in the past few decades faced longevity risks - the risk that annuitants survive more than expected - and therefore need a new approach to manage this new risk. in this dissertation we survey methods that hedge longevity risks. these methods use securitization to manage risk, so using modern financial and insurance pricing models, especially wang transform and actuarial concepts, ...

In this issue, the third article about COVID-19 is published. It consists of the most beneficial and new findings after the previous issue. It has been attempted to explain different aspects of SARS-Cov2 infection and its effects on human social and personal aspects .Nowadays manuscripts on present pandemic are showery and ongoing published. Therefore it is not possible to review all of them, h...

reserches show that relationship between human and residential places is based upo both emotional and identity structures. in other words, habitat place is not only the creator of a part of humanistic identity but also form a kind of sentimental and emotional bond that may result in tendency to maintain closeness to a specific place. therefor, formaton of emotional and identity relationship wit...

in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...

  Abstract After Mongol invasion into Iranian plateau new cultural elements entered by the invaders which influenced on some aspects of Persian book art. Uighur script which first was used to write Mongol and then eastern Turkish languages, appeared in Persian Manuscripts which were produced for Timurid governors and some of famous works are remained from Yazd, Herat, Guilan and Shiraz. These...