Social economy as a new challenge

Coronavirus as a New Challenge for Infection Control in Dentistry: A Literature Review

 Modes of transmission of the COVID-19 virus are still unclear. The virus could spread through direct routes, including aerosols and saliva, and indirect transmission through contaminated surfaces. Dental practitioners produce airborne infectious particles especially when using rotary instruments during treatment. Oral fluids, blood, and oral mucosa are also sources of infection, so dentists ar...

Self-Assessment as a New Challenge in Iranian Context: Its Strengths and Weaknesses

Rebalancing the World Economy: a Common Challenge

1 Great changes are taking place in the world economy. The center of gravity is moving to Asia and the emerging world. This has been recognized in the landmark agreement on IMF reform reached at the last G20 Ministerial meeting. China has become the IMF's third shareholder, India has moved up by five ranks and Brazil is now on par with Canada (a G7 country). Symmetrically, the European represen...

Addiction: A big challenge of social security in Iran

Due to special conditions of Iran; i.e., neighboring to major centers of drug production in Afghanistan during the last few decades, it was the passageway of the drug to Europe. Moreover, because of appropriate context of social, economic and cultural situations, there was an increased addiction and drug trafficking in Iran. It is obvious that a lot of people would be involved directly and indi...

Social "facilitation" as challenge and threat.

The authors conducted an experiment to test a theoretical explanation of social facilitation based on the biopsychosocial model of challenge and threat. Participants mastered 1 of 2 tasks and subsequently performed either the mastered (i.e., well-learned) or the unlearned task either alone or with an audience while cardiovascular responses were recorded. Cardiovascular responses of participants...