• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2017.04a
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• pp.119-119
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• 2017

부레옥잠은 대량 재배 및 수확이 가능한 수질정화용 식물로 생활하수, 축산폐수, 공장폐수 등의 수질정화 기능이 뛰어나고, 수확물은 건조 및 발효과정을 거쳐 가축 사료, 유기질 비료, 버섯 배지로 사용이 가능하고, 별도의 공업적 처리를 거치면 고부가가치의 바이오 연료, 연소용 연료로 사용이 가능한 친환경 농업 생산물로 본 연구에서는 부레옥잠의 고형연료 제조를 위한 수면에서 수확장치 개발을 위한 견인 특성을 파악하고 장치개발 가능성을 파악하고자 하였다. 부력구조물 부력, 부레옥잠 견인력, 부력을 측정하기 위한 실험 장치를 제작하여 부레옥잠 중량, 견인방식, 견인속도에 따른 견인력을 측정하였고, 경남 거제시에 위치한 저수지에서 실제 견인실험을 수행하였다. 실험결과 견인중량 및 견인 속도가 증가할수록 견인력은 증가하였으며 인력으로 부레옥잠을 견인하는 경우 부레옥잠 중량당 견인력은 약 $0.9{\sim}1.39kg_f$로 나타났으며 이는 향 후 부레옥잠 견인장치를 설계할 경우 부레옥잠 견인중량에 따른 견인력 산정 시 참고 자료로 매우 유용하게 활용 가능할 것으로 판단되었다. 저수지에서 견인실험 결과 견인속도 증가에 따른 유속저항으로 경운기에 의한 견인작업은 불가능하였으며 인력에 위한 견인 실험결과 부레옥잠 단위중량당 견인력은 견인바 3 m의 경우 1.5 ~ 2.6 N/kg, 견인바 6 m의 경우 2.1 ~ 5.4 N/kg로 비교적 크기로 나타났으나, 견인용 바에 따른 요인을 고려한 경우는 0.36 ~ 0.91 N/(kg-m)로 비교적 일정한 값을 보였다. 견인용 바 6 m, 무부하에서 인력과 경운기로 견인하는 경우 견인력은 39.24 N, 153.03 N으로 인력으로 견인하는 경우가 견인력이 작게 측정되었음. 이는 속도증가에 따라 물의 저항력이 증가함으로 나타난 결과로 부레옥잠 견인 시 견인속도는 0.36 m/s가 가장 적합한 것으로 판단되었다.

• The Korean Journal of Malacology
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• v.24 no.2
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• pp.109-119
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• 2008

In order to investigate the possibility of yearly-harvest, we carried out growth experiment(shell height, meat weight and condition index) for of the artificial oyster spat, which suspended in three different times before the season for natural spat around coastal waters of Gyeongnam Province. Shell growth of spats suspended in June showed higher than those in April and May. In meat weight, the growth of spats was significantly elevated from October, of which significant difference was observed depending on growing farms(Gosung$\geq$80 mm) and October on the meat weight level($\geq$5 g).

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.246-257
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• 2018

The purpose of this study was to investigate the effects of physical health status and social support on depression and quality of life among the elderly in G City. This is a descriptive research study of 497 elderly residents in 45 senior citizen centers in G city; the data were collected from March 5 to 30, 2018. Data were analyzed using the IBM SPSS/win 24.0 program by t-test, ANOVA and multiple regression analysis. In physical health status, the chronic disease score was $1.35{\pm}0.91$, the functional status score was $1.80{\pm}4.45$, and the subjective health score was $3.14{\pm}1.13$. The average score for social support in the emotional network was $5.71{\pm}1.13$. In the sub-region of the social network, the score for frequency of contact with relatives was $2.92{\pm}1.31$, that for contact with friends was $3.18{\pm}0.98$, and that for social participation was $0.68{\pm}0.82$. In the multiple regression analysis of factors affecting depression and quality of life, the explanatory power of physical health status and quality of life was 45.5% and 21.1%, respectively. The explanatory power of depression based on social support and quality of life was 46.7% and 27.5%, respectively. This study indicates that physical health status and social support affect depression and quality of life. Therefore, programs should be developed to increase the physical health status and social support and thus improve the quality of life of the elderly in the community.

• Journal of Korean Society of Water and Wastewater
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• v.21 no.5
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• pp.609-619
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• 2007

The objective of this paper is to evaluate the feasibility of conjunctive Operation between Multi-regional water supply networks from multiple source as a effective way to meet two conditions: to minimize the electric cost for providing water demanded and meet the water flow rate for satisfying customers. EPAnet Model is used to calculate a hydraulic water distribution condition based on an integrated operation of water supply systems located in short distance. The modeling was conducted on several simulation cases including the individual operation by existing inter-regional water supply networks within short distance, the conjunctive operation of more than two existing networks with valve fully closed and full open constraint. As a study distribution system, water supplying systems of the Geojae-city in the Geongsang Namdo Province was selected and investigated. It was found that a well-allocated water supply scheme based on a conjunctive operation promises to save the electric cost and satisfy all operational goals such as stability and revenues during the period. The result such as unit district costs, pareto optimum pump combination sets will be applied to the optimization for a conjunctive operation of existing inter-regional water supply networks within short distance.

• Journal of Life Science
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• v.15 no.3 s.70
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• pp.447-452
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• 2005

The characters of Chamaecyparis obtusa community extended around the Mt. Gyeryoung in Geoje-cik were investigated for several ecological parameters and the results can be summarized as fellows. Chamaecyparis obtusa is prevailing in the plantation area, whereas Pinus densiflora and Quercus mongolica are prevailing in its outskirts. Plant biomass and net production which estimated from degree of green naturality and Miami's model were much higher in the plantation than those of the natural forest. However, the mean species diversity of plantation was lower than that of natural populations. In stratification of investigated areas, overstory tree layer was dominant in the zone of plantation and dominant layers in the natural forest were understory tree layer, shrub, and herb.

• Proceedings of the Acoustical Society of Korea Conference
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• 1998.06c
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• pp.491-494
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• 1998

해양음향 토모그래피는 해수중을 전파하는 음파의 전파시간을 측정하여 이것으로부터 수온 및 유속의 분포를 구하는 새로운 관측기법이다. 해양음향 토모그래피에 의한 실시간 유속측정 시스템을 구축하기 위한 기초실험으로서 해양음향 토모그래피의 유속측정 유효성을 검증하기 위하여 쌍방향 음파전파의 해양음향 토모그래피 실험을 1997년 4월중에 거제도 남쪽해역에서 실시하였다. 실험시의 해양물리 환경을 고찰하고 토모그래피에 의한 유속측정 결과를 초음파 유속계(ADCP)에 의한 유속측정 결과와 비교 분석하였다. 그 결과 토모그래피에 의한 유속측정은 매우 양호하게 나타나, 향후 유속측정법으로 활용성이 크리라 기대되었다.

• Korean Journal of Ichthyology
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• v.29 no.4
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• pp.258-260
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• 2017

The morphomeristic features of Gadus macrocephalus was compared using fish samples from Jinhae Bay in the South Sea and Boryeong in the Yellow Sea, Korea. In total, 332 individuals were sampled from 2 locations to investigate the differences in the morphomeristic features and determine applicability of it as a means of stcok discrimination of G. macrocephalus. No significant differences in the number of vertebrae, 1st to 3rd dorsal-fin soft rays, 1st and 2nd anal-fin soft rays, pectoral-fin soft ray, pelvic-fin soft ray, and gill raker were found between two populations from Jinhae Bay and Boryeong. The results of present study revealed that morphomeristic features of G. macrocephalus was not applicable for stock discrimination.

• Journal of Korean Society for Geospatial Information Science
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• v.23 no.1
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• pp.65-71
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• 2015

Red Tide phenomenon which happens in the southern coast of Korea gives massive damage to the fishermen who run fish farms and thereby a lot of efforts to prevent damage are made from various angles. In particular, red tide monitoring with satellite imagery can make it possible to obtain the occurrence data of red tide throughout the whole areas of the sea, which helps provide important information for establishing the preventive plans of disasters. In this regard, this study selected the South Sea of Gyeongnam Province with a view to suggesting the monitoring results with regard to the spread and reduction of the Red Tide in the middle of the day by using the GOCI Images of COMS. With this intention, it selected the region in the South Sea of Gyeongnam Province. The study results of analysis on the GOCI image data for the years of 2013(Aug. 12) and 2014 (Sep. 11) are as follows: the pattern of the Red Tide in the region of the South Sea occurred in the southern sea area of Geoje-do in the morning. It gradually spread and showed a gradual decline after reaching the top at 1 PM. In addition, in terms of the tide movement in the middle of the day, Red Tide began in the southern sea area and moved to the west, and moved to the east again at noon. It is judged that additional study on many factors such as the characteristics of the future Red-tide organisms, tidal currents, amount of sunshine, and water temperature is needed, but it is estimated that Red Tide movement monitoring with GOCI images would provide very crucial information for predicting the spread and movement of the Red Tide to protect and manage the Red Tide disasters.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.30 no.5
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• pp.794-803
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• 1997

Long line suspended culture of oysters has been started commercially in Hansan-Koje Bay since 1969. However, its Annual production has been decreased and culturing periods extended in recent years. So, we investigated environmental parameters and food organisms to identity the causes of poor fatness of oysters in Hansan-Koje Bay from February to November, 1994. As the result, the Water quality of Hansan-Koje Bay was found to be good for culture. For example, the mean concentration of COD was $1.35mg/\ell$, phosphate phosphorus was $0.30{\mu}g-at/\ell$ and dissolved inorganic nitrogen was $4.68{\mu}g-at/\ell$. However, the Hwado island and the inner part of the Hansan-Koje Bay were found to be eutrophicated due to various contaminants transported by land-based activities. But in the central pan of the Hansan-Koje Bay where the oyster farms Have been developed densely, the level of nutrient concentration was very low. During the study period, the dominant species of phytoplankton was Chaetoceros spp. with the percentage of $72.6\%\~87.8\%$ and the mean values of Chlorophyll-a concentration and phytoplankton standing crops were $2.05mg/m^3\;and\;188ind./m\ell$, respectively. The distribution of these parameters also showed similar trends those of nutrients. Especially, chlorophyll-a contents was very low with the concentration of below $0.5mg/m^3$ at central part of the Bay, Juklimpo. The fatness of oysters and the eutrophic index in this area were $18.1\%$ and 0.54, respectively. These values were lower than those of other culturing farms in the southern coastal areas in Korea. Therefore, we estimated that the insufficient food supply due to the low level of nutritional status was the major factors affecting the poor fatness of the Pacific oysters in Hansan-Koje Bay.

• Journal of Korean Medical classics
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• v.18 no.3 s.30
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• pp.126-135
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• 2005

통과분석(通過分析)${\ulcorner}$금궤요약심전${\lrcorner}$경병조문중우재경적주석(痙病條文中尤在痙的註釋), 득출여하결론(得出如下結論) 1. 경병적원인유이(痙病的原因有二) : 외인시태양풍한중감한습(外因是太陽風寒重感寒濕); 내인시혈기음양적손상(內因是血氣陰陽的損傷), 단진액부족시기공통지처(但津液不足是其共通之處). 2. 경병기본속우표병(痙病基本屬于表病), 출현심맥시인감수습사소치(出現沈脈是因感受濕邪所致). 3. 경병(痙病), 출현강직시인감수풍사(出現强直是因感受風邪). 4. 강경유오한증상(剛痙有惡寒症狀), 단유가능인위표실증무오한증상(但有可能認爲表實證無惡寒症狀), 고장원문중적'반'자직접인용과래설명(故將原文中的反字直接引用過來說明). 5. '기맥여고'화'폭복장대'시풍사거이습사잔존적시후출현적('其脈如故’和‘暴腹腸大'是風邪去而濕邪殘存存的時侯出現的). 6. 경병적양명어열증가사용대승기탕(痙病的陽明瘀熱證可使用大承氣湯), 기병불시위료거제조실(其幷不是爲了去除燥實), 이시위료하양명어열(而是爲了下陽明瘀熱), 고실제상사용대승기탕적시후요소심근신(故實際上使用大承氣湯的時候要小心謹愼).