• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 추계 학술발표회
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• pp.820-826
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• 2008

Differ number of seismograph to the composition dam by recently frequent earthquake and analyzed responsiveness. Interest for dam inner place by increase of something wrong flood and inside and outside of the country earthquake appearance according to unusual change of weather is risen, on important urea in dam safety floodgate school register by structural safety divide can. Therefore, by PMP (PMF) of dam and increase of domestic earthquake occurrence, need research about earthquake resistant nature ability estimation of water resources facilities. Because responsiveness analysis applies number 0.154 ~ 0.25 g of seismograph, seismic wave that use in analysis is being suitable in dynamic analysis of construction such as Rockfill dam from representative chapter cycle faction and recommend in domestic internal examination design workbook, and use results applied much Hachinohe wave onions in van abroad.

• 한국주거학회논문집
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• 제14권4호
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• pp.131-138
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• 2003

The purpose of this study was to examine how the purchasers perceive the effects of the unit characteristics within the complex on the apartment prices. Six major characteristics of the apartments : orientations and floors; views; structures; conditions and maintenances of interior materials; interior alterations; and access to the outdoor facilities were included for the analysis. The data were gathered from 284 households in seven private apartment complexes in Ulsan. It was found that the price of the apartment was higher if it was southward, on the royal or semi-royal floors, with the nice view for the riverside or any other landscape resources, or openness. Other characteristics which increase the price were the hall type not the corridor one, inner side of the building, good conditions of interior materials, and extended balcony.

• Animal Systematics, Evolution and Diversity
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• 제36권4호
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• pp.387-390
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• 2020

A parasquillid stomatopod, Faughnia haani(Holthuis, 1959), collected from Jeju Island, is reported for the first time in Korea. This species is characterized by the presence of obtuse anterolateral angles of carapace, median and three pairs of longitudinal carinae on telson, and crenulate inner margin of uropodal protopod. In this paper, a detailed description and illustrations are provided. As a result of this study, the geographical distribution of the present species is extended and 15 species of stomatopods including this species are now recorded in Korean fauna. The specimen examined herein was deposited in the National Institute of Biological Resources(NIBR).

• Journal of Species Research
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• 제13권2호
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• pp.178-184
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• 2024

Two species (Lucicutia clausi, L. flavicornis) of Lucicutia (Lucicutiidae Sars, 1902) have been reported in Korean waters and one species(L. gaussae) is newly added the Tsushima Warm Current realm. Specimens from Korean waters are morphologically consistent with previous morphological characteristics of L. gaussae, but these differ in the following characteristics: 1) the male antennule with one process on segments XIX-XX, one process on segment XVIII, and three processes on segments XXI-XXIII; 2) in male leg 5, basis of left leg in the Korean specimen with small spine processes on the protrusion; 3) in male leg 5, the third exopodal segment of left leg without an inner marginal spine. In this study, we provide a redescription of L. gaussae insufficiently described by previous authors.

• Asian-Australasian Journal of Animal Sciences
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• 제17권7호
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• pp.924-929
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• 2004

The objective of this study were to investigate the effect of ejaculation frequency on semen characteristics and to establish a method for quick assessment of sperm concentration in TCC using packed cell volume (PCV) as the parameter (Trial 1). Eighty senior roosters, averaging 61 wk-old, were used and the sperm concentrations were determined using a hemacytometer. The PCV value was measured in a capillary (0.75 mm in inner diameter) by centrifugation. A simple linear regression analysis suggested that the sperm concentrations were significantly correlated with PCV values (r=0.62, p<0.001). Trial 2 was conducted to determine the optimal ejaculation frequency of TCC roosters in a weekly semen collection program. The male birds were subjected to 1, 2, 3 or 6 ejaculations per week for four consecutive weeks and semen characteristics including ejaculation volume (EV, mL), sperm motility (%), PCV (%), sperm concentration (ESC, $\times$10$^{9}$/mL), weekly sperm production (WSP, $\times$10$^{9}$/wk) and average motile sperm numbers (AMSN, $\times$10$^{9}$/ejac) were determined. Average EV was greater in the group with 3 ejac/wk than with only 1 ejac/wk in weeks 1 and 3 of the collection period. WSP increased with ejaculation frequency during the first 3 weeks of collection (p<0.05). Sperm motility was better in the birds with 6 ejac/wk than in single ejaculation group for the first 2 wk and no significant differences were found for the last 2 wk of study. In contrast, the PCV value showed a trend of reduction for the first 2 wks in the 6 ejac/wk group. Surprisingly, no significant differences were detected in the AMSN among treatment groups. The weekly motile sperm production (WMSP) increased with ejaculation frequency. Based on our observation, PCV values could be used for a quick estimation of sperm concentration and an intensive semen collection program enhanced weekly sperm production in TCC roosters.

• 물과 미래
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• 제13권2호
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• pp.55-62
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• 1980

태풍 말습전에 바다 연안에서의 해일(고조)을 예측하는 것은 매우 중요한 일이다. 태풍기에 한국에서는 해일피해를 어느 곳인가 매년 입고 있고 이로 인한 피해복구를 위해 정부에서는 막대한 예비비를 소비하고 있다. 우리나라에서는 아직 해일 예측 프로그램이 전무하므로 이 예측 프로그램을 개발하므로써 건설부, 상공부, 농림부 등에 기여할 수 있을 것이다. 최근 고속전자계산기의 발전으로 복잡한 수치해석이 쉽게 할 수 있게 되었다. 그래서 저자는 유체력자에서의 운동 및 연속방정식의 정시차, 정거리의 차분화법을 써서 해일예측 프로그램을 작성하였다. 입력자료로서는 천기도와 현안지점의 외해, 내해의 수심만을 쓰게 했다. 1976년 후란 태풍시를 대상으로 하여 모델로서 포항 내항에 본 프로그램을 적용한 결과 실측치와 거의 일치함으로 알았다.

• 한국항해학회지
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• 제24권5호
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• pp.343-360
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• 2000

The information technology(IT) development of telecommunication, along with the informationalization over the world, enables the firms to process their inner and outer operations through Electronic Data Interchange (EDI) system. And the concept of logistics has become more important to the enterprises in strategic sense because it had aggrandized itself to more comprehensive and integrative concept. Also the world shipping market is more competitive than any other market. In these environment, to maintain competitve power, shipping firms process operations by Logistics Information system(LIS), And then, reduce the working processes, working time and its costs. So the LIS has become more important in developing our national logistics system and industry. Therefore, this study purposes on empirically analyzing the activation factors of shipping LIS and the relationship these factors with logistic performances in the shipping industry. Considering environments of Shipping logistics information system, this study sets up the research model and hypothesis to examine the activation factors of shipping LIS and the relationship these factors with logistic performances. We used the field data on the 163 numbers of firms(29 overseas shipping companies and 133 forwarding Agency) to get the empirical evidence. According to the study results, The shipping LIS activation factors which the sample firms recognized as important: were top manager's support, well structured communication channel, strategic plan's connection and inner informationalization level. And IS organization ＆ human resources, IS discipline ＆ training, software development, IS organizational alignment, database management system, information standardization, competitive advantage, financial support and government support represent partially significant. Also, the current shipping LIS's main problems are expensive system cost, standardization of working process's, institution's imperfection and system's interaction defect. So these problems must be improved to activate shipping LIS.

• 한국항해학회지
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• 제25권2호
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• pp.159-172
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• 2001

The information technology(IT) development of telecommunication, along with the information analyzation over the world, enables the firms to process their inner and outer operations through Electronic Data Interchange (EDI) system. And the concept of logistics has become more important to the enterprises in strategic sense because it had aggrandized itself to more comprehensive and integrative concept. Also the world shipping market is more competitive than any other market. In these environment, to maintain competitive power, shipping firms process operations by Logistics Information system(LIS), And then, reduce the working processes, working time and its costs. So the LIS has become more important in developing our national logistics system and industry. Therefore, this study purposes on empirically analyzing the activation factors of shipping LIS and the relationship these, factors with logistic performances in the shipping industry. Considering environments of Shipping logistics information system, this study sets up the research model and hypothesis to examine the activation factors of shipping LIS and the relationship these factors with logistic performances. We used the field data on the 163 numbers of firms(29 overseas shipping companies and 133 forwarding Agency) to get the empirical evidence. According to the study results, The shipping LIS activation factors which the sample firms recognized as important: were top managers support, well structured communication channel, strategic plans connection and inner information analyzation level. And IS organization & human resources, IS discipline & training, software development, IS organizational alignment, database management system, information standardization, competitive advantage, financial support and government support represent partially significant. Also, the current shipping LISs main problems are expensive system cost, standardization of working processs, institutions imperfection and systems interaction defect. So these problems must be improved to activate shipping LIS.

• Animal Systematics, Evolution and Diversity
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• 제14권1호
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• pp.43-49
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• 1998

1996년부터 1997년까지 서해와 제주도를 비롯한 국내 연안에서 채집된 흉상 어속 어류를 재검토한 결과 Carcharhinus brachyurus, C. dussumieri, C. limbatus, C. plumbeus, C. sorrah의 5종이 분류되었으며, 이 가운데 Carcharhinus dussumieri 흰뺨상어와 C. sorrah 검은꼬리상어는 미기록종으로 확인되었다. 흰뺨상어는 제2등지느러미만 검은색을 띠고, 검은꼬리상어는 꼬리지느러미 하엽과 제2등지느러미, 가슴지느러미 끝에 뚜렷한 검은색을 띠고 있어서 무태상어, 흉상어 등 국내의 기타 흉상어속 어류와 잘 구분되었다. 한편 정(1977)의 C. gangeticus와 C.bracyurus는 각각 C. plumbeus와 C. limbatus임이 명백하였으며, C. limbatus에 대해서는 국명을 남방상어로 하였다.

• Journal of Advanced Marine Engineering and Technology
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• 제37권5호
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• pp.548-556
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• 2013

생산량 증대를 위한 방법으로 다른 두 내경의 2단 튜빙을 이용한 기법이 제안되고 있다. 본 연구에서는 다양한 2단 튜빙조합을 고려하여 각 목적에 부합하는 조합들을 제시하였다. 기존연구에서 고려한 생산량뿐만 아니라 유동안정성을 확보하는 결과를 제시하였다. 유동안정성은 tubing pressure traverse, 액체부피비, 운영조건의 안정성을 통해 분석되었다. 본 연구에서 분석한 가상유전의 경우 순현재가치가 가장 큰 2단 튜빙은 하단이 4.5 in 내경에 길이가 2000 ft이며 상단은 5.5 in 내경에 길이가 8000 ft인 조합이다. 2단 튜빙간 마찰압력손실 차이는 크지 않았기 때문에 단일튜빙과 비교했을 때보다 다양한 조합이 가능하였다. 튜빙하단에선 liquid loading을 방지하기 위해 작은 액체부피비를 유지하는 것이 중요한데, 이는 2단 튜빙 하단에서 작은 내경을 사용함으로써 가능하였다. 생산운영의 분석결과로부터 다양한 튜빙 디자인이 가능함을 확인하였다.