نتایج جستجو برای: degradation due to population growth
تعداد نتایج: 11049791 فیلتر نتایج به سال:
study of distribution of elderly population in chahar mahal and bakhtiari province from 1966 to 2011
background and aims: nowadays, the age structure of iran is transitioning from youth to elderly. although, the elderly population are still accounted for a small portion of the population; however, the population growth rate of this age group is growing compared to the growth of the total population. therefore, understanding of the changes of this population is necessary. this study aimed to id...
chapter i provides an overview of structural linguistics and touches upon the saussurean dichotomies with the final goal of exploring their relevance to the stylistic studies of literature. to provide evidence for the singificance of the study, chapter ii deals with the controversial issue of linguistics and literature, and presents opposing views which, at the same time, have been central to t...
abstract due to the growing importance and influence of the self of the teacher in the field of educational and cognitive psychology, the current study intended to investigate the relationship between three teacher qualities and characteristics, i.e. teacher self efficacy, self regulation, and success as perceived by their learners. the study aimed at finding whether teacher self efficacy an...
abstract since heubners (1985) pioneering study, there have been many studies on (mis) use/ non-use of articles by l2 learners from article-less and article languages. the present study investigated how persian l2 learners of english produce and interpret english definite descriptions and demonstrative descriptions. it was assumed that definite and demonstrative descriptions share the same cen...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
recent years have witnessed an increased attention to form focused instruction and consciousness raising activities (ellis, 2002; doughty & williams, 1998) on the one hand and extensive and meaningful exposure to the target language (klapper & rees, 2003; day & bamford, 1998) on the other. due to significance attributed to above mentioned issues by scholars, this study attempted to bridge them ...
Coccidian Parasites and Conservation Implications for the Endangered Whooping Crane (Grus americana)
While the population of endangered whooping cranes (Grus americana) has grown from 15 individuals in 1941 to an estimated 304 birds today, the population growth is not sufficient to support a down-listing of the species to threatened status. The degree to which disease may be limiting the population growth of whooping cranes is unknown. One disease of potential concern is caused by two crane-as...
The relationship between democracy and environment has always been controversial. Some scientists found that democracy had a positive impact on reducing environmental disruption. Other scholars claimed that democracy tends to accelerate environmental degradation. Ther are many studies focusing on main determinants of environmental degradation. More recently, democracy is considered to be one of...
during the recent decades, urban management in iran has increasingly confronted numerous challenges due to different kinds of social, cultural, political, executive, financial, and legal factors. the present study is going to specify and analyze the aforementioned challenges in the domain of the urban environment in order to determine how far they have been effective, how they have been priorit...
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