today, development of social entrepreneurship has been regarded as a social and altruistic mission and as a solution to some social problems and damages. entrepreneurship has exerted positive and direct impact on the activities of many different countries. on one hand, it leads to economic development and creation of vocational opportunities; and on the other hand, it causes to improve social a...

Water shortage can be caused by population growth that drives the growth of water demand for domestic, agricultural and industrial purposes. Water shortage in water-rich areas can be also caused by water pollution. The water problem caused by poor quality and insufficient quantity has been widely noted and well informed among the researchers, decision makers and ordinary people, but not much re...

With the development of technology, today, use technology in field agriculture has become widespread. In order to meet increasing demand for agricultural products, automation techniques should be used areas make production products simpler and more efficient. this study, an system is designed by making against problems such as irrigation problem water shortage, which have important areas. The d...

today, limitations of water availability besides common rights between countries on transboundary rivers causes a competition among them for more water using. usually, stakeholders prefer to overuse from their water rights because of unreliability, risk aversion and short term approaches. iran, afghanistan and turkmenistan as common congruities on harirud always try to maximize their benefits f...

in recent years, farming section of south khorasan province faces different limitations such as increasing shortage of water resources and continuous reduction of weather showers.considering consecutive droughts and water crisis in agricultural plain of the province, it is necessary to use water resources optimally and increase productivity of water shortage input. comparison of water productiv...

Today, all over the world, university nursing programs are based on professional academic training (1). In many pioneering countries in nursing, to enter a nursing program , an applicant must have a two-year accreditation in other fields such as psychology or must be educated and trained in nursing for 4 years to qualify as a registered nurse (2). In Iran, individuals enter nursing school after...

the growth of industries during the industrialization and after the industrial revolution has caused environmental problems all around the world; specifically in industrial countries. in spite of having high technology, industrial countries have not been able to solve the problem of environmental pollution. even meetings and conferences such as those held in stockholm and johannesburg have not ...

A rationale for mitigating global warming (GW) is that warming might exacerbate many of today’s urgent problems — hunger, malaria, water shortage, coastal flooding, and habitat conversion — which could be particularly problematic for developing countries. Recent assessments of the global impacts of climate change indicate that into the 2080s, except for coastal flooding, GW’s contribution to th...