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Influence of Water Temperature and Salinity on Sand Ejection of Manila Clam, Ruditapes philippinarum
강경호,김재민,김영훈,Kang, Kyoung-Ho,Kim, Jae-Min,Kim, Young-Hun 한국패류학회 2005 The Korean Journal of Malacology Vol.21 No.1
In this study, the influence of water temperature and salinity on sand ejection of Manila clams, Ruditapes philippinarum, was investigated. The result showed that, under different water temperature, the highest quantity of sand ejection was at $20^{\circ}C$, the value of which was 0.091 g, while the smallest one was only 0.058 g at 0$^{\circ}C$. The highest releasing rate, 95.79%, could be seen in $20^{\circ}C$ group, while $0^{\circ}C$ group was the lowest one, 85.29%. Under different salinity, 30 psu group had the highest value, 0.057 g, and 0 psu (freshwater) group was the lowest one, only 0.026 g. At the same time, the highest releasing rate appeared at 25 psu, which was 90%. 0 psu group was the lowest one in releasing rate, 60.47%. According to these results, we recommend that the clams should be placed into the clear seawater with about 25 psu of salinity at near $20^{\circ}C$ to let the clams perform the self-depuration. Better quality of clams containing less impurity in the aquaculture and commerce could be obtained from this pre-treatment.
Gonadal Development and Reproduction in the Trumpet Shell, Charonia sauliae
강경호,김재민,선승찬,김현정,Kang, Kyoung-Ho,Kim, Jae-Min,Seon, Seung-Cheon,Zhuo, Liang Liang,Lim, Sang-Min,Kim, Hyeon-Jeong The Malacological Society of Korea 2009 The Korean Journal of Malacology Vol.25 No.1
This study devised and tested a histological staging system for gonadal development in the trumpet shell, Charonia sauliae, which was collected along the south coast of Jeju Island, South Korea. This paper details for the first time the gonadal development characteristics of C. sauliae. Ovary and testis development in C. sauliae can be roughly divided into five stages: growing, mature, spent, degenerative, and resting. The trumpet shelll has multiple fecundation and fertilization during the spawning season for out-of-step gonadal development in high-temperature and low-salinity environments. Female trumpet shell tended to have larger shells and were more abundant than males (64.26% of all animals collected were female).
강경호,손승찬,김재민,김현정,Kang, Kyoung-Ho,Seon, Seung-Cheon,Kim, Jae-Min,Zhuo, Liang Liang,Lim, Sang-Min,Kim, Hyeon-Jeong The Malacological Society of Korea 2009 The Korean Journal of Malacology Vol.25 No.1
The trumpet shell Charonia sauliae is an endangered and valuable species with potential for aquaculture. For artificial propagation of C. sauliae, the effects of three different food microalgae on the development, growth, and survival rate of the larvae and spat were investigated. For the larval feeding experiments, we utilized six microalgae species as food sources, namely Pavlova lutheri, Tetraselmis suecica, Nannochloris oculata, Isochrysis galbana, Chaetoceros calcitrans, and Phaeodactylum tricornutum; for the larval and spat growth and survival experiments, we utilized T. suecica, C. calcitrans, and P. tricornutum. The results showed that the temporal digestion index (TDI) for the veliger larvae was significantly different for C. sauliae fed the different microalgae species (p < 0.05), that the T. suecica, C. calcitrans, and P. tricornutum cultivars were better suited for larval consumption (p < 0.05), and that the growth and survival of the larvae and spat were significantly influenced by food type, specifically P. tricornutum (p < 0.05). Further research is needed to evaluate the effects of other microalgae species, different algal concentrations, and biochemical composition on the growth and survival of C. sauliae.
가집(歌集) 『해동악장(海東樂章)』의 작품(作品) 수록(收錄) 양상과 편찬(編纂) 특성
강경호 ( Kang Kyung-ho ) 한국어문교육연구회 2007 어문연구(語文硏究) Vol.35 No.4
本考는 『海東樂章』의 여러 特徵的 樣相들에 주목하여 이 가집의 編纂 特性과 그 所用 目的에 대해 살펴보았다. 『해악』은 3種의 異本이 있는데 모두 舊王宮과 관련된 소장 정보를 갖고 있다. 또한 해악에는 歌曲源流系 가집들의 편찬시기를 가늠할 수 있는 「安玟英 序文」이 남아 있고, 『가곡원류』 편찬의 실질적 인물인 安玟英의 時調 작품들이 상당수 수록되어 있다. 특히 안민영의 시조 작품들은 주로 王室 대상의 頌祝 시조(樂章類 시조)들과 안민영 藝人 집단의 주요 구성원이었던 妓生 관련 시조들이 수록되어 있는데, 이러한 작품 수록 양상은 안민영의 개인적 관심과 의도가 깊게 반영된 것이며 이는 다른 가곡원류계 가집과는 변별되는 『해악』만의 差別化된 가집 편집 의식에 의한 것임을 확인할 수 있었다. 요컨대 『해악』은 대원군을 위시한 왕실과 박효관·안민영의 예인 집단 등 특정 향유 범위에서의 所用을 위해 편찬된 가집이다. Haedongakjang is Sijo Anthologies(歌集) that is collecting most works among different versions of Gagokwonryu. An, Min-yeong works have been collected most to this Sijo Anthologies, and An, Min-yeong's preface that can know compilation time of Gagokwonryu has been collected. Also, when Geumokchongbu go through close thing, Hae- dongakjang is Sijo Anthologies that is edited from cultural space connected with Anminyeong or the surrounding persons and is enjoyed. Features of An, Min-yeong work collected on Haedongakjang chapter are first, works of royal family blessing for DaeWongun and the surrounding person. Second, works of Haedongakjang are continuous with Gisaeng who and An, Min-yeong have much private acquaintance. This works talk Sijo Anthologies used in limited extent for specification persons and DaeWongun. Therefore, Haedongakjang give expression to Gagok Sijo Anthologies that put into elegance in group of artists and royal family.
시각장애학교 중도실명 고등학생의 학교생활 태도 및 만족도
강경호 ( Kang Kyung-ho ),이해균 ( Lee Hae-gyun ) 대구대학교 한국특수교육문제연구소 2017 특수교육저널 : 이론과 실천 Vol.18 No.1
이 연구의 목적은 시각장애학교 중도실명 고등학생을 대상으로 학교생활 태도 및 만족도를 분석함으로써, 이들의 학교생활 적응과 교육적 개선방안을 위한 기초자료를 제공하는데 있다. 연구의 결과와 논의에 기초한 결론은 다음과 같다. 첫째, 중도실명 고등학생의 배경변인별 학교생활 태도는 여학생이 남학생보다 높고, 저시력학생이 맹학생보다 높다. 또한 학교생활 만족도는 저시력학생이 맹학생보다 높다. 둘째, 중도실명 고등학생의 문항별 학교생활 태도는 자신감, 자기의식, 과제해결력, 장래성, 활동성 문항에서 저시력학생이 맹학생보다 높다. 또한 문항별 학교생활 만족도는 교우관계와 교사의 관심, 수업 기자재 활용 문항에서 여학생이 남학생보다 높고, 다른 연령대의 교우관계와 교사의 설명, 교사의 학급운영 문항에서 저시력 학생이 맹학생보다 높다. 셋째, 중도실명 고등학생의 학교생활 태도 및 만족도 간의 상관관계는 정적 상관이 있다. 이러한 연구결과를 바탕으로 후속연구에 대해 제언하였다. The purpose of this study is to analyze the attitudes toward school life and satisfaction with school life of high school students with adventitious blindness, and to provide basic information on educational improvements to enhance students` school Life. In order to carry it out, 134 students with adventitious blindness who attend 12 high school for the blind were given questionnaire sheet. And than those were analyzed according to background variables. These are the findings based on research and discussions. First, attitudes toward school life by background variables; female students remain more positive than male students. Students with low vision are presented more positive than blind students. Satisfaction with school life by background variables; students with low vision are presented more positive than blind students and it is high in the order of teens, twenties, thirties, forties and fifties. Second, attitudes toward school life by questions; students with low vision reveal more positive than those with visual impairment for confidence, self-consciousness, task solving abilities, promise and activity. Satisfaction with school life by questions; female students indicate more positive than male students for friendship, teachers concerns and use of classroom equipments. Third, the attitudes toward school life and satisfaction with school life present a positive correlation.
영동군 NFI 및 생태자연도를 이용한 생물종다양성 지도화
강경호(Kang Kyung Ho),허준(Heo Joon),정다정(Jung Da Jung),김도연(Kim Do Yeon),박효근(Park Hyo Kyen) 대한공간정보학회 2010 한국공간정보학회 학술대회 Vol.2010 No.3
본 연구에서는 기후 변화 이후 이슈화되고 있는 생물종다양성의 경제가치를 지도로 표현하기 위해 영동군의 NFI와 생태자연도 자료를 이용하여 생물종다양성 지도화를 수행하였으며, 그 정확도는 3가지 경우에서 모두 70%를 상회하는 결과를 보였다. 이를 통해 생물종다양성 보존 및 관리의 필요성을 인식할 것으로 기대된다.