• Journal of Ecology and Environment
• /
• v.32 no.3
• /
• pp.167-176
• /
• 2009

Land cover changes associated with urbanization have driven climate change and pollution, which alter properties of ecosystems at local, regional, and continental scales. Thus, the relationships among urban ecological variables such as community composition, structure, health, soil and functioning need to be better understood to restore and improve urban ecosystems. In this study, we discuss urban ecosystem management and research from a futuristic perspective based on analyses of vegetation structure, composition, and successional trends, as well as the chemical properties of soils and the distribution of heat along an urban-rural gradient. Urban thermo-profile analysis using satellite images showed an obvious mitigating effect of vegetation on the Seoul heat island. Community attributes of Quercus mongolica stands reflected the effects of urbanization, such as pronounced increases in disturbance-related and pollution-tolerant species, such as Styrax japonica and Sorbus alnifolia. Retrogressive successional trends were detected in urban sites relative to those in rural sites. Changes in the urban climate and biotic environment have the potential to significantly influence the practice and outcomes of ecological management, restoration and forecasting because of the associated changes in future bio-physical settings. Thus, for management (i.e., creation and restoration) of urban green spaces, forward-thinking perspectives supported by historical information are necessary.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.34 no.6 s.119
• /
• pp.101-110
• /
• 2007

This study is a base research for the restoration of village landscape of the Namhan-Sansung. The Namhan-Sansung has been recognized as a top destination for dining places. However, there have been increasing concerns about the village landscape and its rich historic and cultural heritages transformed into dining places. The village landscape of Namhan-Sansung should be reconstructed as a setting for education and loaming of Korean history and culture forgotten for a long time. The landscape also should be a space where resolute resistance and spirit of Korean people and a futuristic village space where environment friendly community environment harmonizes with daily lives. Restoration efforts of village landscape of the Namhan-Sansung can get to start from exploring the prototype of the village. In order to restore the prototype, it is important to review potential elements and setbacks. Based on the prototype of the Namhan-Sansung village, transitions of village landscape were reviewed and directions of restoration were proposed. Also, an improvement plan was proposed after reviewing problems in system and planning.

• Journal of Korean society of Dental Hygiene
• /
• v.14 no.5
• /
• pp.617-622
• /
• 2014

With the explosive increase of esthetic demands by patients, many dental materials for the esthetic restoration have been introduced. Recently, zirconia based restorations are using for the cases of single crown, bridges, implant prostheses etc. Zirconia have superior mechanical properties and biocompatibility. Owing to the properties of high strength, zirconia has to be manufactured by CAD/CAM system. Dental CAD/CAM system is a futuristic treatment and technical system which makes it possible to produce the precision and uniform prosthesis and also standardize the treatments. This article introduces the characteristics of zirconia, fabrication procedure using CAD/CAM system and procedure for the cementation of zirconia based restoration.