麗水近海의 海況特性에 관한 硏究

曺炷煥,金永成,李吉洙 조선대학교 기초과학연구소 1987 自然科學硏究 Vol.10 No.1

This study was done for the purpose of effectively preserving the fishing grounding which are existing and will be newly established in Yeosu coastal areas. Accordingly, the oceanegrahic conditional characteristics of these areas were investigated in February, May, September and November, 4 times each year from 1984 to 1985, that results are as follows: 1. The mean water temperature was high by 24.4℃ in Deukyang Bay in September 1984 and low by 3.8℃ in Yeoja Bay in February 1985. In comparison of water temperature with common year, it was high by 0.2~1.1℃ in February and May and low by 0.3~1.1℃ in September and November 1984, and 1ow by 1.2~2.0℃ in February to November 1985. 2. The distribution of salinity was 14.8~34.0‰ for two years:14.8~33.9‰ in 1984 and 31.2~34.0% in 1985. The mean distribution was low by 29.2‰ in September 1984 and high by 33.6% in February 1985. The distributions in each coastal area were low by 23.1% in KwangyangBay in September 1984 and high by 33.9% in the external sea of Keumsan area. In comparison of saliaity with common year, it was low by 0.2~2.0‰ in May, September and November 1984 and high by 0.5~l.6‰ in February, May and September 1985. It was high by 0.2~O.7‰ respective1y. 3. The distribution of dissolved oxygen was 3.2~88㏄/ℓ for two years : 3.5~7.8㏄/ℓ in 1984 and 3.2~88㏄/ℓ in 1985. The distribution were high by 0.7㏄/ℓ in February and low by 7.4㏄/ℓ in September 1984 and high by 7.4㏄/ℓ and low by 4.5㏄/ℓ in May 1985. The distributions in each coastal area were high by 8.4㏄/ℓ in Gamag Bay and low by 3.9㏄/ℓ in Kwangyang Bay in 1985. 1n comparison of distribution with common year, it was low by 0.1~O.3㏄/ℓ in 1984 and high by 0.2~0.6㏄/ℓ in 1985. 4.The distribution of PO_4-P was 0.Ol~5.O8㎍-at/ℓ for two years: 0.O1~5.48㎍-at/ℓ in 1984 and 0.01~3.44㎍-at/ℓ in 1985. The distribution was high by 1.65㎍-at/ℓ in Kwanyang Bay in November 1985 and low by 1.65㎍-at/ℓ in the external sea of Keumsan area. 5. The distribution of NO_2-N was 0.01~ll.7㎍-at/ℓ for two years : 0.01~8.48㎍-at/ℓ in 1984 and 0.02~ll.79㎍-at/ℓ in 1985. The distribution was low by 0.02㎍-at/ℓ in Gamag Bay in September 1984 and high by 5.32㎍-at/ℓ in Kwangyang Bay in September 1985. 6. The distribution of SiO_2-Si was 0.18~71.5㎍-at/ℓ for two year 036~71.50㎍-at/ℓ in 1984 and 0.18~27.18㎍-at/ℓ in 1985. The distributions were high by 31.81㎍-at/ℓ in Kwangyang Bay in September 1985 and low by 1.5~3㎍-at/ℓ in Yeoja Bay in May 1985.

Hegel 哲學에 있어서 客觀的 精神 : 가족 人倫生活과 女性을 中心으로 Bezugrich der Familie und Weiber

趙珠煥 대구효성가톨릭대학교 사회과학연구소 1981 女性問題硏究 Vol.10 No.-

전남 나주호와 영산강 지류에 나타나는 조석현상의 분석

조주환,임광혁,Cho, Ju-Whan,Im, Kwang-Heuyk 한국지구과학회 2000 한국지구과학회지 Vol.21 No.2

내수면에 나타나는 조석현상을 조사하기 위하여 전라남도의 나주호와 영산강에서 1997년 12월 30일부터 1998년 1월 27일까지 1시간 간격으로 수위변화를 측정하였다. 여기서 얻어진 결과는 다음과 같다. 나주호와 영산강지류에서 모두 일주조와 반일주조가 나타났으나 조차는 수 mm 내지 수 십 mm로 작다. 하루에 두 번씩의 고조와 저조가 있었고, 1일 2회의 고조 중에서 일조부등 현상도 나타났다. 그믐과 보름이 지난 2일 후에 대조가 나타나고, 상현과 하현 후에 소조가 나타났다. 조화분해한 결과에 의하면 나주호에 나타나는 조석은 반일주조가 우세하며, 진폭이 가장 큰 순서로 주태음반일주조(M$_2$)가 0.55mm이고, 주태음일주조(O$_1$) 0.47mm, 월일합성일주조(K$_1$) 0.43mm, 주태양반일주조(S$_2$) 0.39mm의 순이다. 영산강 지류에 나타난 조석은 4mm에서 크게는 18mm로 장소, 지형 , 방향에 따라서 조차가 다르게 나타난다. 목포항의 고조 시각과 영산강 지류에 나타난 고조 시각과는 약간의 차이가 있다. 남평 지석강 수중보에서 나타나는 수위변동은 동 ${\cdot}$ 서 방향으로는 반일주조에 가까운 반면에 남 ${\cdot}$ 북 방향에서는 6시간 정도의 변동주기가 나타났다. To investigate the characteristics of tides in the Naju Lake and Youngsan River, we measured the water level at the Naju Lake for one month (from 30 Dec. 1997 to 27 Jan. 1998) and at several points along the Youngsan River. We found that there are predominant waves with periods of semidiurnal and diurnal tides. The amplitudes of M$_2$, S$_2$, O$_1$ and K$_1$ calculated by harmonic analysis are 0.56, 0.39, 0.48,0.43mm, respectively. The tidal ranges along the Youngsan River, which are almost coincident with the tidal variation of Mokpo, are from 4mm to 18mm depending upon the locations and the direction and that of six-hours period in the north-south direction.

授業方法과 認知樣式이 地球科學 學業把持에 미치는 效果

曺炷煥 조선대학교 교육연구소 1996 교과교육연구 Vol.18 No.-

I have examined the interaction effects of instructional methods (expository and discovery) which are instruction variables and learner's cognitive styles which are learner variables on three-weeks post-instruction retention of learning content in Earth Science. The main purposes of this dissertation are to investigate the following issues; 1) Will instructional methods have any effects on three-weeks post-instruction retention of learning content(i.e. the domain of knowledge, comprehension and application) including weather-forecast in Earth Science ? 2) Will the learner's cognitive style have any effect on three-weeks post-instruction retention of learning content in Earth Science ? 3) Will instructional methods and learner's cognitive style have any interaction effects on three-weeks post-instruction retention of learning content in Earth Science ? To prove these questions I have constructed the following hypotheses: I) There is a difference between expository instruction groups and discovery instruction groups on three-weeks post-instruction retention test results. I-1) Compared with total scores, discovery instruction groups perform better than expository instruction groups. I-2) Compared with the scores in the domain of knowledge, expository instruction groups perform better than discovery instruction groups. I-3) Compared with scores in the domains of comprehension and application including weather-forecasting, discovery instruction groups perform better than expository instruction groups. Ⅱ) Field-independent groups perform better than field-dependent groups on three-weeks post-instruction retention test results. Ⅲ) The effect of discovery instruction shows that field-independent groups perform better than field-dependent groups on three-weeks post- instruction retention test results. The subjects of this study were 185 first-graders of a boys'high school and 189 first-graders of a co-ed high school in Kwangju. Ninety-two students of the boys'high school and ninety-five students of the co-ed high school were assigned to the expository instruction group, and another ninety-three students of the boys'high school and ninety-four students of the co-ed high school were assigned to the discovery instruction group. The Group Embedded Figure Test was then administered the groups in order to assess the learner's cognitive style. Subjects who scored in the upper 75%ile were classified as field-independent learners, while those in the lower 25%ile were classified as field-dependent learners. Those with scores between the 74th and 24th%ile were classified as medium-learners. I have included in the statistical analysis 35/25 field-independent subjects, 35/43 medium subjects, and 22/27 field-dependent subjects in the expository instruction group at the boys'high school and the co-ed high school, respectively; and 32/27 field-independent subjects, 41/43 medium subjects, and 20/24 field-dependent subjects in the discovery instruction group at the boys'high school and the co-ed high school, respectively. To test the hypothesis posited above, I have analyzed the scores using the Two-way ANOVA method in the boys'high school and the Three-way ANOVA method in the co-ed high school by SAS Package Program. The major results of this study are as follows: 1. There was no significant difference between the expository instruction group and the discovery instruction group on three-weeks post-instruction retention tests of the domain of knowledge, but significant difference was revealed between the two groups(discovery instruction is more effective than expository instruction) of the comprehension and application domains. In the case of weather-forecast, there were significant interaction effects, and discovery instruction also proved to be more effective in the three-weeks post-instruction retention test. 2. The field-independent cognitive style was more effective than the field-dependent cognitive style in three-weeks post-instruction retention of learning content in Earth Science. 3. There was no significant interaction effect on three-weeks post-instruction retention tests between instructional methods and learner's cognitive style of learning content in Earth Science.

光陽灣의 底棲生物에 관한 硏究

曺炷煥,金忠滿 조선대학교 기초과학연구소 1989 自然科學硏究 Vol.12 No.1

The species, distributon, composition and relative growth of all the living things caught in the bottom layer of Kwangyang Bay were investigated from the ecological viewpoint four times in 1982 as follows ; All the catches were classified into 55 species ; Pisces were 32 species, crustacea 13, mollusca 5, echinoderma 4 and coelelenterate 1. The compositions of all the species caught in the bay were; echinoderma was 55.9%(starfish occupied 54.3%), pisces 25.8%, crustacea 15.2%, mollusca 3.0% and coelenterata 0.1%. The mean body length and weight of the fish caugth much were ; Liparis tessellatus 9.4㎝ and 17.6g, Enedrias nebulo년 14.7㎝ and 16.9g and Harengula zuuasi 9.6㎝ and 7.7g, Eopsetta grigorjewi 9.7㎝ and 24.1g, Nibea argentatus 10.1㎝ and 12.7g, Aoanthogobius flavimanus 9.8㎝ and 9.7g, Astroconger myriaster 27.8㎝ and 35.7g Octopus ochellatus 12.2㎝ and 36.g respectively. The regression formular between the body length(L) and the body weight(W) is as follows ; Liparis tessellatus W=0.02744 L^2.75560 Enedrias nebulosus W=0.0035 L^3.05708 Astroconger myriaster W=0.00312 ^2.79419 Acanthogobius flavimanus W=0.02195 L^2.49911 Charybdis japonica W=1.01160 L^2.64030

회원작품 - 이태원다가구주택

조주환,황한구,Cho, Chu-Hwan,Hwang, Han-Gu 대한건축사협회 1998 建築士 Vol.1998 No.8

A. Augustinus 의 시간의식 : Rudolf Berlinger 의 비판적 고찰을 중심으로

趙珠煥 대구효성가톨릭대학교 사회과학연구소 1985 女性問題硏究 Vol.14 No.-

Husserl의 存在論의 根本着想

趙珠煥 대한철학회 1980 哲學硏究 Vol.30,31 No.-

韓國 沿近海의 海洋環境 特性

曺炷煥,李宣娥 조선대학교 기초과학연구소 1998 自然科學硏究 Vol.21 No.1

An intensive survey on characteristics of oceanographical environments of near shores in Korea carried on from February, 1994 to November, 1995. These sea areas show a wide variation with time, place and in all seasons. These factors are important for the inhabitancy and spawning of aquatic life. The above-mentioned near shores are comparatively not polluted. But recently increasing pollution by materials carrying into the areas from inland is wreaking ecological havoc throughout the coastal waters. On new data from the coastal probes we can conclude that it is really imperative for us to take steps for the preservation of oceanic environments in Korea.

한국 서해 경기만 조간대 퇴적층의 퇴적물 특성과 층서

조주환,김영성,임동일 조선대학교 사범대학 부설 교과교육연구소 2001 敎科敎育硏究 Vol.4 No.1

경기만 반월 조간대 퇴적분지의 퇴적 층서를 밝히기 위해 2지점에서 평균 20m에 달하는 심부시추를 실시하였다. 시추된 퇴적물은 퇴적환경과 경계면의 특성에 의해 크게 2개의 퇴적단위 UnitⅠ과 UnitⅡ로 구분된다. UnitⅠ은 5-10m의 두꺼운 니질 퇴적물로 구성되며, 현세 해침기간동안 점이적인 해수면 상승과 힘께 형성된 현세 니질 조간대 퇴적층으로 해석된다. 기반암을 부정합적으로 피복하고 있는 퇴적단위 UnitⅡ는 두께가 최대 10m에 달하며, 조립의 자갈과 모래로 구성된다. 조립의 사질 퇴적물은 동해의 사구에 비하여 원마도가 낮고, 서해의 대륙붕 퇴적물보다는 높은 원마도를 나타낸다. 이러한 결과들은 UnitⅡ 퇴적물이 다소 강한 유수 작용에 의한 하천 퇴적물임을 제시한다. 결론적으로 생물 파편의 부재, 역사질의 조립한 퇴적물 조직, 쇄설성 입자의 형태 특성 그리고 층서 위치 등을 고려할 때 퇴적단위 UnitⅡ는 현세 해침이전 최대빙하기(LGM)동안 퇴적된 육성의 하천 퇴적물로 해석된다. To elucidate the stratigraphy of Banweol tital-flat deposits, Kyunggi Bay, western coast of Korea, two boreholes, up to 20 m in thickness, were taken using a well-unilized deep-drilling equipment. On the basis of depositional enviornment and erosional boundary, these deepdrilled borehole sediments can be divided into two sedimentary units(UnitⅠ and UnitⅡ). UnitⅠ reaches up to 10 m in thickness and consists mainly of mud and silt sediments with mean grain size of 7-9 phi. This unit is interpreted as a typical intertidal-flat deposition accumulated during mid-to-late Holocence sea-level rise. Beneath the Holocence tidal-flat mud(UnitⅠ) are very coarse-grained sandy sediments (UnitⅡ) woth approximately 10 m thick. Roundness in UnitⅡ sediments is lower than those of relict shelf sediments. Considering the texture, grain shape, stratigraphic position, and absence of biogenic materials, UnitⅡ might be accumulated under the active hydrodynamic condition of the fluvial enviornment during sea-level lowstand, possibly last glacial maximum(LGM).