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김청숙,최윤석,이용화,윤세라 해양환경안전학회 2010 해양환경안전학회 학술발표대회 논문집 Vol.2010 No.11
본 연구는 어족이 풍부하여 좋은 어장이 형성되어 있는 남해 EEZ에서 2009년 3월 어류를 채집 하였으며, 채집된 어류의 무기원소를 형광 X선 분석법(XRF, X-Ray Flourescence Spectrometry)을사용하여정성분석을 하였다.어종에 따라약간의차이는 있지만공통적으로 Na2O, MgO, Al2O3, SiO2, P2O5, SO3, Cl, K2O, CaO, MnO, Fe2O3, CuO, ZnO, As2O3, Br이 검출되었다. 또, K2O, SO3 이 다른 성분에 비해 높게 검출되었다. In this study, Good fishing grounds rich in fish and the southern coast EEZ of Korea, fish were collected in March 2009 and the XRF of iorganic elements in fish collected using qualitative analysis. Although there are slight differences depending on the species in common were detected Na2O, MgO, Al2O3, SiO2, P2O5, SO3, Cl, K2O, CaO, MnO, Fe2O3, CuO, ZnO, As2O3, Br. Also, K2O, SO3 higher than those for other elements were detected.
2011년 곰소만 표층퇴적물의 지화학적 특성 및 중금속 오염도 평가
김청숙,김형철,이원찬,홍석진,황동운,조윤식,김진호,김선영,Kim, Chung-sook,Kim, Hyung Chul,Lee, Won Chan,Hong, Sokjin,Hwang, Dong-Woon,Cho, Yoon-Sik,Kim, Jin ho,Kim, Sunyoung 한국수산과학회 2017 한국수산과학회지 Vol.50 No.5
To understand the geochemical characteristics of Gomso Bay, which features extensive Manila clam, we measured various geochemical parameters, organic matter, and trace metals (Cu, Cd, Pb, Zn, Cr, Hg, As and Fe) of intertidal and subtidal surface sediments in 2011. The surface sediments consisted of sedimentary facies including gravel (0.21%), sand (61.1%), silt (32.1%), and clay (6.5%). The chemical oxygen demand (COD) and acid volatile sulfide (AVS) values in most areas were below sediment quality criteria (COD, $20mg/g{\cdot}dry$; AVS, $0.2mg/g{\cdot}dry$). Trace metals in the surface sediments were below pollution thresholds, except for As (morderately polluted). Sediment quality was evaluated using the trace metal pollution load index (PLI) and ecological risk index (ERI), which showed that sediments were generally not polluted and at low risk; however, values along the outer bay were higher. We expect these results will be valuable for sustainable aquaculture prodution and environmental management in Gomso Bay.
유치원 교사의 전문성 발달과 지식의 기초에 관한 요구와의 관계
김청숙 한국교원대학교 유아교육연구소 2010 한국유아교육연구 Vol.12 No.-
본 연구의 목적은 교사의 전문성 발달과 지식의 기초에 관한 요구를 살펴보고, 이러한 전문성 발달과 지식의 기초에 관한 요구가 교사의 경력에 따라 차이가 있는지 알아보고, 전문성 발달 정도와 지식의 기초에 관한 요구 간에는 어떠한 관계가 있는지를 알아보고자 하는 것이다. 본 연구의 대상은 강원도 교육청 관내 소재 공립유치원에 재직 중인 원감, 교사 461명으로 전문성 발달은 보통 이상으로 경력에 따라 차이가 있으며, 지식의 기초에 관한 요구는 보통 이상으로 경력에 따라 전체요구에서는 차이가 없으며, 하위영역인 교육 및 사회현상에 대한 이해, 유아교육 현장에 대한 이해, 연구능력에서 차이가 있다. 전문성 발달과 지식의 기초에 관한 요구 간에는 경력을 통제 한 후 살펴본 결과 보통의 정적 상관이 있으며, 연구능력에서 가장 높은 상관을 보였다. The purpose of this study was to examine the professional development of teachers, their needs for the basis of knowledge, the relationship of their career to professional development and needs for the basis of knowledge and the relationship between their professional development and needs for the basis of knowledge. For the purpose, following research questions were set up. 1. How about the specialty development of the teacher, Is there a difference by a career? 2. How about the demand about the basics of knowledge, Is there a difference by a career? 3. How about the relations with the demand about the specialty development rank of the teacher and the basics of knowledge? The subjects in this study were 461 assistant principals and teachers in public kindergartens under the umbrella of the Gangwon-do Office of Education. An instrument used in this study to assess the professional development of the kindergarten teachers was Baek Eun-joo & Cho Boo-kyung(2004)'s inventory, and the other used to evaluate their basis of knowledge was Cho Boo-kyung, Park Eun-hye & Lim Seung-ryeol (1998)'s inventory. As to data handling, F-test was carried out to check their professional development and needs for the basis of knowledge, and Duncan test was utilized to make a post-hoc analysis. To look for connections between the level of their professional development and needs for the basis of knowledge, partial correlation coefficients were after having controlled a career. The research of this study were as followings: First, the professional development of the teachers was above the average in general. They scored highest in development of knowledge and knowhow, followed by ecological development and development of self-understanding. In regard to overall professional development by career, the teachers whose length of career was between 11 and 20 years ranked first, followed by those with 20 years or more of career, those with six to 10 years of career and those with five years or less of career. The intergroup gaps were significant. In terms of the three aspects of professional development, there were significant gaps in all the three aspects of professional development that involved development of knowledge and knowhow, development of self-understanding and ecological development. Second, they had strong needs for the basis of knowledge, which was above the average. They were most in need of understanding of children, followed by communication skills, research ability, understanding of the early childhood curriculum, understanding of kindergarten teacher professionalism, understanding of actual early childhood education, and understanding of educational and social phenomena. Concerning their overall needs for the basis of knowledge by career, the teachers whose length of career was between 11 and 20 years called for the basis of knowledge the most, but the gap between them and the others was not significant. As for the subfactors of needs for the basis of knowledge by career, career made a significant difference to their needs for understanding of educational and social phenomena, needs for under- standing of actual early childhood education and needs for research ability. Third, when the relationship between their professional development and needs for the basis of knowledge was investigated by keeping career in control, there was a positive correlation between the two(r=.42). The level of professional development had a positive correlation to the subfactors of needs for the basis of knowledge(r=.20 to r=.41). Among the subfactors of needs for the basis of knowledge, that was most closely linked to needs for research ability, followed by needs for understanding of kindergarten teacher professionalism, needs for communication skills and needs for understanding of the early childhood curriculum. Regarding the relationship between the three aspects of professional development and the subfactors of needs for the basis of knowledge, development of knowledge and knowhow and development of self-understanding had the closest correlation to needs for research ability, and ecological development had the strongest correlation to needs for communication skills.
탄소 및 질소 안정동위원소를 활용한 어류 가두리 양식장 내 퇴적 유기물의 기원 및 기여도 평가
고영신,이대인,김청숙,심보람,김형철,이원찬,이동헌 한국하천호수학회 2022 생태와 환경 Vol.55 No.2
We investigated physicochemical properties and isotopic compositions of organic matter (δ13CTOC and δ 15NTN) in the old fish farming (OFF) site after the cessation of aquaculture farming. Based on this approach, our objective is to determine the organic matter origin and their relative contributions preserved at sediments of fish farming. Temporal and spatial distribution of particulate and sinking organic matter(OFF sites: 2.0 to 3.3 mg L-1 for particulate matter concentration, 18.8 to 246.6 g m-2 day-1 for sinking organic matter rate, control sites: 2.0 to 3.5 mg L-1 for particulate matter concentration, 25.5 to 129.4 g m-2 day-1 for sinking organic matter rate) between both sites showed significant difference along seasonal precipitations. In contrast to variations of δ13CTOC and δ15NTN values at water columns, these isotopic compositions (OFF sites: -21.5‰ to -20.4‰ for δ13CTOC, 6.0‰ to 7.6‰ for δ15NTN, control sites: -21.6‰ to -21.0‰ for δ13CTOC, 6.6‰ to 8.0‰ for δ15NTN) investigated at sediments have distinctive isotopic patterns(p<0.05) for seawater-derived nitrogen sources, indicating the increased input of aquaculture-derived sources (e.g., fish fecal). With respect to past fish farming activities, representative sources(e.g., fish fecal and algae) between both sites showed significant difference (p<0.05), confirming predominant contribution (55.9±4.6%) of fish fecal within OFF sites. Thus, our results may determine specific controlling factor for sustainable use of fish farming sites by estimating the discriminative contributions of organic matter between both sites.
자란만 패류양식해역의 물리환경 설명을 위한 평균체류시간 산정
김진호,박성은,김영민,김청숙,강성찬,정우성,심보람,엄기혁,Kim, Jin Ho,Park, Sung-Eun,Kim, Youngmin,Kim, Chung Sook,Kang, Sungchan,Jung, Woo-Sung,Sim, Bo-Ram,Eom, Ki-Hyuk 한국환경과학회 2020 한국환경과학회지 Vol.29 No.3
Residence time is defined as the time taken for a material in a system to leave the system. The residence time characteristics in shellfish aquaculture determine the dispersion of excretion from aquaculture farms, along with the supply of food by seawater exchange. In this study, we estimated the spatial distribution of average residence time in the shellfish farming area using a particle tracking model. As a result, a relatively short average residence time of about 20 days or less was calculated in most areas, but an average residence time of more than 40 days was calculated in the inner areas. Relatively long average residence times were calculated along the west coast compared to the east coast, with the longest average residence time of more than 50 days in the northwestern areas. It can be inferred that the disturbance of the benthic ecosystem caused by shellfish farms is likely to be large because of the relatively weak dispersion of excrement from shellfish farms located on the west coast, especially in the northwest region. This distribution of average residence time is important for understanding the potential effects of seawater exchange on the environmental sustainability of shellfish farms, along with the seawater circulation characteristics of Jaran Bay.
강성찬,김형철,황운기,심보람,김청숙,이원찬,홍석진,Kang, Sungchan,Kim, Hyung Chul,Hwang, Un-Ki,Sim, Bo-ram,Kim, Chung-sook,Lee, Won-Chan,Hong, Sokjin 한국수산과학회 2017 한국수산과학회지 Vol.50 No.5
Some of the mariculture grounds near Ongjin-gun, Korea, were designated as mariculture management areas in 2007. Areas are so designated when the environmental quality of the mariculture ground deteriorates or there is an outbreak of hypoxia or harmful red tide that kills mariculture organisms. We surveyed the water and sediment quality and examined the mortality of mariculture organisms in the Ongjin-gun mariculture area. In a survey conducted in 2016, the water quality was better than the environmental quality standards for mariculture grounds, excepts for dissolved inorganic nitrogen, and the sediment quality was good. However, there was still mortality of mariculture organisms in some of the designated management areas. The areas that met the environmental quality standards should be delisted and the areas in which we observed mortality should be classified as management areas. This will enable the sustainable development of aquaculture and preserve healthy mariculture grounds.