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박준홍(Joon-Hong Park),김효겸(Hyo-Gyeom Kim),김현수(Hyun-soo Kim),전언찬(Eon-Chan Jeon),송정한(Jung-Han Song) 한국기계가공학회 2007 한국기계가공학회 춘추계학술대회 논문집 Vol.2007 No.-
The performance of cooling tower is affected mainly by the thermal performance of cooling tower. In this paper, designed the shape of new fill based on the shape of plate heat exchanger. A contrast of heat transfer performance is executed by numerical analysed. And fur new fills have been devised and their performance have been compared with those of existing fill to find shape.
텍스트마이닝 (text-mining) 기법을 이용한 국내 담수외래종 연구동향 파악
도윤호 ( Yuno Do ),고의정 ( Eui Jeong Ko ),김영민 ( Young Min Kim ),김효겸 ( Hyo Gyeom Kim ),주기재 ( Gea Jae Joo ),김지윤 ( Ji Yoon Kim ),김현우 ( Hyun Woo Kim ) 한국하천호수학회(구 한국육수학회) 2015 생태와 환경 Vol.48 No.3
We identified research trends for freshwater exotic species in South Korea using text mining methods in conjunction with bibliometric analysis. We searched scientific and common names of freshwater exotic species as searching keywords including 1 mammal species, 3 amphibian-reptile species, 11 fish species, 2 aquatic plant species. A total of 245 articles including research articles and abstracts of conference proceedings published by 56 academic societies and institutes were collected from scientific article databases. The search keywords used were the common names for the exotic species. The 20th century (1900’s) saw the number of articles increase; however, during the early 21st century (2000’s) the number of published articles decreased slowly. The number of articles focusing on physiological and embryological research was significantly greater than taxonomic and ecological studies. Rainbow trout and Nile tilapia were the main research topic, specifically physiological and embryological research associated with the aquaculture of these species. Ecological studies were only conducted on the distribution and effect of large-mouth bass and nutria. The ecological risk associated with freshwater exotic species has been expressed yet the scientific information might be insufficient to remove doubt about ecological issues as expressed by interested by individuals and policy makers due to bias in research topics with respect to freshwater exotic species. The research topics of freshwater exotic species would have to diversify to effectively manage freshwater exotic species.