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최영은 ( Young Eun Choi ),김창환 ( Chang Hwan Kim ) 한국도서(섬)학회 2013 韓國島嶼硏究 Vol.25 No.2
This study analyzes the flora researched from 22 uninhabited islands in Buan-gun and Gochanggun of Jeollbukdo Province. In total there were 199 taxa of vascular plants, 65 families 139 genera 173 species, 1 subspecies, 23 varieties, 2 forms, and they were studied. Among these were 70 types of Jakeuntanchi-do including 35 families 58 genera 57 species, 11 varieties, 2 forms, 69 taxa of Gae-do, 51 types of Suribawi, 45 varieties of yeol-do and 43 taxa of Tanjunggeum-do in the order of the number of types. However, there was not a single plant found in Moyeo2-do, Moyeo3-do and Ganyeo-do since the environment there only consists of rocky terrains in which vegetation is hard to form. In order to analyze the characteristic of each flora, samples from the Chungnam province was collected at a higher latitude where as in the Jeonnam province, plants in the lower latitude were examined. The districts involved concerns Buangun and Gochanggun including the 22 uninhabited islands. In Buangun and Gochanggun only a minority species of Evergreen Broad leaved Trees such as the Camellia japonica and Eurya japonica which tend to be dispersed were examined. Compared to Goheung, Yeosu and Younggwang where there are diverse warm temperate species, Bunangun and Gochanggun have a less variety of vegetation. In addition a high number different vegetation was found in the uninhabited islands of Chungnam province and Gunsan city, where artificial disturbance is not severe compared to other study areas. A total of 21 taxa of Korean endemic plants were researched in the study area, which involves the South Province of the Korea. A relatively small number of Korean endemic plants, 1.96% of 1,071 Korean endemic plants (Kim, 2000), inhabit this region. The number of naturalized plants was relatively small as well, consisting of 8 taxa, 4.39% (naturalized ratio) of the whole 182 species researched in the 22 uninhabited islands and 2.49%(urbanization index) of the 321 Korean naturalized plants species. Thus, vegetation conservation and restoration measures are needed in order to protect the vegetations of Buangun, Gochanggun and the 22 uninhabited islands from human interference and disturbance. In conclusion this study was designed to identify indigenous species dispersed in Buangun, Gochanggun and the 22 uninhabited islands. The purpose of this study was to provide primary data on examining indigenous species in order to contribute to the conservation and restoration of flora and vegetation.
유아교육기관에서의 실내공기질 조사 및 실내활동에 따른 입자상오염물질의 농도특성
최영아(Young-A Choi),이태정(Tae-Jung Lee),김동술(Dong-Sool Kim) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.3
This study was performed to investigate indoor air quality and to characterize the concentration of particulate matters followed by human activities in preschool classrooms. Concentrations of PM<SUB>10</SUB>, PM<SUB>2.5</SUB>, and PM₁ were measured every 5-minute intervals by means of a dust monitor adopting the principle of light scattering. Two mini-volume air samplers were used further to measure the I/O concentration ratio of PM₁? and to calibrate the dust monitor since the photometric method often exaggerates the mass of fine particles. The calibration factor in the study environment was determined as 0.64. In the preschool classrooms, the ranges of average indoor PM<SUB>10</SUB>, PM<SUB>2.5</SUB>, and PM₁ concentrations were 51.5~117.6, 21.5~98.4, and 16.2~84.5 ㎍/㎥, respectively, while that of I/O concentration ratio was 0.8~1.3. Based on correlation analysis among various environmental parameters, PM₁ was slightly correlated with humidity (r=0.416, p<0.01). However, outdoor PM<SUB>10</SUB> was strongly related with indoor PM<SUB>2.5</SUB> (r=0.95, p<0.01), with PM₁ (r=0.94, p<0.01), and with PM<SUB>10</SUB> (r=0.84, p<0.01). The trend of PM<SUB>2.5</SUB> and PM₁ concentrations appeared to be very similar unlike the case of PM<SUB>10</SUB>. Since the elevated coarse particle concentration (2.5㎛<dp<10㎛) and the average PM<SUB>2.5</SUB>/PM<SUB>10</SUB> ratio were highly dependent on classroom activities, the parameter of PM<SUB>2.5</SUB>/PM<SUB>10</SUB> ratio was intensively studied with 7 different indoor activities in the preschool classrooms.
중소기업의 정부지원형 ERP시스템 도입 영향요인에 관한 연구
최영은 ( Young Eun Choi ),박종필 ( Jong Pil Park ),이은곤 ( Eun Kon Lee ) 한국정보시스템학회 2013 情報시스템硏究 Vol.22 No.4
Government initiatives are continuously being invested to nurture supporting business environment for small and medium sized enterprises (SMEs), such as government-support ERP systems project for SMEs. As such, scholars need to pay attention to SMEs can successfully adopt and manage government-support ERP systems. This study, therefore, conceptually developed and tested a research model for understanding what factors influence SMEs` intention to adopt government-support ERP systems. We obtained thirty samples from SMEs, which is organizational level, and data were analyzed using the partial least square (PLS) technique. The results of data analysis found that institutional pressure and resource dependence had positive effects on the adoption of government-support ERP systems. On the other hand, risk aversion of SMEs was found to have negative effects to adopt government-support ERP systems.