نتایج جستجو برای: during last decades
تعداد نتایج: 1929091 فیلتر نتایج به سال:
Drought is one of the most serious problems arising for human societies and ecosystems from climatevariability. This phenomenon causes billions of dollars in global damages annually and affects morepeople than any other form of natural disasters.In this study, the trends of rainfall and meteorological drought time series were investigated at tenstations located in the east of Iran for the perio...
Background Cystic fibrosis (CF) is the most prevalent lethal chronic genetic and multivariate disease, widespread in Iranian population. The aim of this study was to evaluate the condition of patients with CF from various dimensions in the last decades in Iran.<b...
The purpose of this research is to analyze heat waves characteristics in the warm period of the year as a climatic hazard in Iran. In this study, the daily maximum temperature is taken at 44 synoptic stations during the period 1981-2010. These temperature values were used to extract the intensity, frequency and duration of heat waves using percentile thresholds of 90, 95, and 98. The results sh...
Almost every experinced manager has been faced with the necessity of dealing with the problems of productivity in connection with wages and salaries. During the last two decades, governments, cultural centers, managers and :::union:::s have focused their attention on productivity as an important subject and there have been many articles emphasizing the linkage between wages and productivity and...
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