نتایج جستجو برای: population increase
تعداد نتایج: 1426027 فیلتر نتایج به سال:
Abstract Introduction: population aging refers to an age imbalance of the population so that the ratio of young population decreases while aged population grows. Decrease in fertility rate and growing life expectancy are the two key factors in emergence of population aging. The macro economy effects of population aging on economic growth was examined based on the effects of two factors includ...
trissolcus grandis (thomson) (hymenoptera: scelionidae) is the most important egg parasitoid of the common sunn pest, eurygaster integriceps puton (hemiptera: scutelleridae) in iran. demographic characteristics may be used for preliminary screening of parasitoid species or populations as well as for predicting their efficiency under different physical conditions in the field. in this study, the...
Abstract Introduction: population aging refers to an age imbalance of the population so that the ratio of young population decreases while aged population grows. Decrease in fertility rate and growing life expectancy are the two key factors in emergence of population aging. The macro economy effects of population aging on economic growth was examined based on the effects of two factors includ...
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