• Journal of the Korean association of regional geographers
• /
• v.14 no.5
• /
• pp.453-465
• /
• 2008

The purpose of this study is to introduce the concept of the geographic center, to examine its value as locational resource, and to consider the way of its practical uses. Geographic center is the intersection point where central meridian and central parallel cross each other. This geographic locational resources can be used as data for locational education in geographic education, the standards for antipodes, datum points for geodetic surveying, a factor of place marketing, etc. This study can be a model for a geographic discovery that is to seek many geographic resources being scattered about our country.

• The Journal of the Korean dental association
• /
• v.54 no.1
• /
• pp.67-83
• /
• 2016

Ebola virus disease is a lethal viral hemorrhagic fever that has been boiling in sub-Saharan Africa since 1970s. Last year, The Ebola virus epidemic that has spread not only mainly in West Africa, but also in locals such as USA, Europe and the Antipodes via infected travelers, was brought up. Human-to-human transmission of Ebola virus disease is known only through direct contact with the blood, secretions, tissues or other bodily fluids, including saliva. Although there has not been reported infection cases in the dental healthcare settings, the fact that the infection of the Ebola virus may be made from human secretions such as saliva suggests that there is a high risk of infection for the Ebola virus of dental healthcare workers. Therefore, it is important dental healthcare workers to identify infection-suspected patients through the oral findings for infection prevention. This article will review the oral signs and symptoms of Ebola virus disease and discuss the pathogenesis, treatment and prevention. Furthermore, Infection control guidelines for oral healthcare workers are also proposed.