khorasan razavi province with the total precipitations of less than 225 mm/year and total area of irrigated area of 1087466 hectare is considered as one of the most important agricultural region in iran. this province has also important role in local and national economy. lack of perennial river and little amount of surface water has caused 1.06 billion cubic meter of over withdrawn from ground...

virtual colonialism (ameli, 2011) is reflecting a new trend of colonialismin the virtual space parallel to the physical space. according to ameli(2007), withthe “dual spacization” of life,the imperial powers like the united states of americatake the advantage of the synchronization and translocality of the virtual space toexpand their realm of imperial power through the “attraction” and “persua...

background playing video games in childhood may help achieve advanced laparoscopic skills later in life. the virtual operating room will soon become a reality, as “doctor games 2.0” will doubtlessly begin to incorporate virtual laparoscopic techniques. objectives to teach surgical skills to schoolchildren in order to attract them to urology as a professional choice later in life. materials and ...

for about a decade the virtual water trade has been highlighted as a means of promoting water efficiency and helping to solve regional restrictions of water resources in order to provide water and food security. although these tools are not just for certain areas of the world with a specific climate, they are more important for countries which are faced with water resources restriction and cris...

nowadays, the idea of creating virtual organizations has been presented by scholars as a new method of collaboration and managing the collaboration and has been known as an applicable approach in insurance industry. based on above applicability, this idea has been considered in this paper for a virtual insurer organization and according to efficiency and effectiveness of enterprise architecture...

classical soil mechanics involves the study of fully saturated soils. however, many problems encountered in geotechnical engineering practice involve unsaturated soil, in which behavior is significantly different from classical saturated soil. negative pore pressure and capillary forces develop a virtual cohesion between the grains of semi saturated soils. this kind of cohesion is dependent on ...

the virtual space of internet social networks is one of the most important devices to exert the influence of globalization. this virtual space creates a vast quantity of information and meaning representations. faced with this space and the profusion of sources, people experience suspension (i.e. confusion and indecision) in shaping their identity. the loss of the concepts of time and place and...

demand and supply of water in iran is unbalanced. this situation has caused a great challenge in water resources management. in order to overcome this problem, the role of international trade of virtual water has been ignored. virtual water trade is one of the key solutions for water scarcity. each country should adapt virtual water trade based upon its socio-cultural, economical, and climatic ...

In this paper, by investigating the common weights concept and DEA models with nonlinear virtual inputs/outputs, we introduce a model for evaluating the decision making units with nonlinear virtual inputs and outputs based on the common weights.

Introduction: Virtual social networks are increasingly beingused by academics and students in health sciences. It is necessaryto examine opportunities and challenges of these networks basedon the views of faculty and students to describe the existingsituation and planning for proper use. The purpose of this studywas to explore the experiences of students and faculty membersabout opportunities a...