• Proceedings of the Korean Society of Computer Information Conference
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• 2023.01a
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• pp.433-435
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• 2023

본 연구는 기업가정신 글로벌비즈니스 세미나 과목의 과제로써 기업가정신이 무엇인지 확립하고 기업가정신과 연관 지을 수 있는 주제를 선정하여 스스로 연구함으로써 그 의미를 구체화 하고 새로운 패러다임을 제시하고자 하는데 의미가 있다고 볼 수 있다. 저자들은 '문화'가 갖는 상대성에 주목하여 기업가 정신을 해석하였으며 재학 중 배웠던 '홉스테드의 문화 특성' 이론과 접목시켜 문화가 기업가 정신에 어떤 영향을 끼치는지 연구하였다. 글로벌 기업가정신 모니터(GEM)의 글로벌 기업가 지수 순위 조사 결과와, 홉스테드 인사이트(Hofstede-insight)의 6가지 차원에 따른 국가별 문화지수 파일을 접목시켜 수치화하고, 시각적 그래프 및 엑셀 데이터 다중 회귀분석을 통하여 결과를 도출하였다. 홉스테드의 문화 특성이 기업가 정신 순위에 영향을 미칠 것이라고 가정하고 분석한 결과, 홉스테드의 6가지 차원 중 하나인 불확실성 회피성향이 기업가 정신에 가장 높은 영향을 미친다는 사실을 발견하였다. 이번 연구를 통해기업가 정신을 계승하는 기업문화를 제고하고 경제학과 인류학 통합 연구의 필요성을 제시한다.

• Korean Journal of Environment and Ecology
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• v.31 no.5
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• pp.472-478
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• 2017

The feeding habits of Coreoperca herzi were investigated from specimens collected in the Geum River, from March to December 2016. The specimens were separated into groups of 38~70 mm, 71~109 mm, and over 110 mm in total length. The live foods of C. herzi included Ephemeroptera, Odonata, Plecoptera, Coleoptera, Diptera, Trichoptera, and fishes. The Korean aucha perches fed mostly on aquatic insects which took up 98.8% of food regarding the number, 55.8% regarding the biomass, and 97.1% in terms of iregarding the index of relative importance. They were carnivorous in diet and predators (stalker) in food intake characteristics and forms when applying Keenleyside's classification. The main food sources of C. herzi were Ephemeroptera, Diptera, and Trichoptera while Odonata, Plecoptera, Coleoptera, and fishes were rare. A food migration was observed since less Ephemeroptera was found and more Trichoptera and fishes were found in the biomass of the feed consumed by larger species. The amount of Coleoptera and Diptera did not change much with the size of the species. The overall composition of live food was not seasonal. The result of the study indicates that, when restoring the streams to be the habitat for the natural population increase of Coreoperca herzi, the environment should be inhabitable to Ephemeroptera, Diptera, and Trichoptera which are the main foods.

• Ecology and Resilient Infrastructure
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• v.6 no.4
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• pp.179-190
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• 2019

In this study, a fish survey was conducted to investigate the habitat status of black shinner (Pseudopungtungia nigra) designated as endangered species level from the lower part of Yongdam Dam to the upper part of Daecheong Dam. Biodiversity analysis was performed on the basis of the number of fish emerged, and biological health and physical habitat environment were quantitatively analyzed using collected P. nigra. According to the survey, the habitat range of P. nigra was found from Banguri-myeon, Buri-myeon, Geumsan-gun, downstream of Yongdam Dam. The biodiversity analysis results of all species appeared to be low in overall dominance index and relatively high in species diversity and uniformity index. In addition, P. nigra collected in this study was confirmed to have normal growth and nutritional status by the full-length-weighted relativities and condition factor. The physical habitat environment of P. nigra was 0.3 - 0.6 m in depth, 0.3 - 0.7 m/s in flow rate, and bed materials showed high frequency of occurrence in the range of cobbles (64.0 - 256.0 mm) to boulders (>256.0 mm). These results are expected to be used as data for habitat restoration and management in the future as basic data on the spatial range and preferred physical habitat environment of P. nigra in Geumgang.

• Journal of Aquaculture
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• v.20 no.1
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• pp.14-18
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• 2007

Seed production of the cherry salmon, Oncorhynchus masou (Brevoort) were studied in terms of egg development, hatching rate, juvenile growth, smolt duration, smolt rate, and adult growth rates. Fork length and body weight of $0^+$ juvenile were $9.32{\pm}1.19\;cm$ and $9.36{\pm}3.50\;g$ for females and $9.07{\pm}1.02\;cm$ and $8.57{\pm}3.04\;g$ for males, respectively. Body weights of $1^+$ smolt were $84.09{\pm}18.1\;g$ and $86.33{\pm}41.2\;g$ for females and males, while body weights of $1^+$ parr were $101.88{\pm}60.9\;g$ and $98.38{\pm}39.6\;g$ for females and males, respectively. Monitoring of gonadosomatic index (GSI) confirmed that maturations of both sexes were not synchronous; males achieved highest GSI in September, while females achieved it in October.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.9 no.1
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• pp.43-55
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• 1976

Fertilization and early development of turbo cornutus was studied based on the samples which were collected in Yeosu area. Particular emphasis was paid on induction of artificial spawing, fertilization rate, preembryonic development, the growth of the early larva and larval survival to various salinity. Among the various methods for induction of artificial spawning which have been tested for the present study, drying by exposure to air is the. most efficient, and percentage fertilization rate was $83.8-96.4\%$. The diameter of fertilized eggs was $0.182{\pm}0.0028mm$; and the diameter of egg membrane was $0.245{\pm}0.093mm$. Under the temperature range of $20.6-25.4^{\circ}C$ the larvae hatched out after 11:05-11:15 hours of fertilization. After 3.0-3.5 days of fertilization the planktonic larvae begand to settle, and the settlement terminated within 5 days. During the period of 150 days of early culturing the diameter growth of shell(M) and the diameter of shell aperture(A) was formulated as follows: $$1972\;M=0.33e^{0.02070D}$$ $$A=0.19e^{0.02282D}$$ $$1973\;M=0.32e^{0.02282D}$$ $$A=0.16e^{0.02596D}$$ During the same period of early culturing the relative growth of shell diameter and the diameter of shell aperture was formulated as follows : 1972 A=0.6478 S-0.1575 1973 A=0.5897 S-0.0515 After 11 days of larval hatching $0.02-0.18\%$ of planktonic larvae settled. After 150 days of settlement the survival rate of the early shells was $7.4-21.6\%$. Under the temperature range of $21.0-22.7^{\circ}C$ the optimum salinity range for the development of egg and the planktonic larvae was $30-35\%_{\circ}$.

• Journal of Korean Society of Forest Science
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• v.87 no.2
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• pp.276-285
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• 1998

The aboveground biomass and nutrient content (N, P, K, Ca and Mg) of Pinus koraiensis S. et Z., aged 9, 22, 34, 46, 66 years, were measured in the Experiment Forest of Kangwon National University of Kangwondo province. The site index of the stands ranged from 13.5 to 14.2. Allometric equations (logY=alogX+b, where Y, X is ovendry mass and DBH, respectively) relating dry weights of stem, branches and needles to diameter at breast height (DBH) were developed to estimate aboveground tree biomass. Total above ground tree biomass increased with stand age from $21.8t\;ha^{-1}$ in the 9-year-old stand to $130t\;ha^{-1}$ in the 66-Year-old stand. Aboveground biomass was allocated as follows : stem> branch > foliage, except for the 9-year-old stand which had a greater proportion of foliage biomass than branch biomass. As stand age increased, an increasing proportion of annual biomass increment was allocated to stems. The aboveground biomass of shrubs and herbs ranged from 0.4 to $3.9t\;ha^{-1}$ and from 0.05 to $0.6t\;ha^{-1}$, respectively. No relationship was found between aboveground understory biomass and stand age. The mass of woody debris and forest floor varied between 0.59 to $1.54t\;ha^{-1}$ and 6.0 to $21.63t\;ha^{-1}$, respectively. Nutrient accumulation in aboveground tree biomass increased with stand age and was in the order of N > Ca > K > P > Mg. Average rates of nutrients accumulation in biomass were greatest in the early stages of stand development, and less marked as stand aged. The nutrient concentrations in different tree components decreased in the order of needle > branch > stem. There were no detectable trends in nutrient content of the forest floor and mineral soils with stand age. Understory vegetation contributed little to the nutrient pool of these Korean pine ecosystems. Mineral soil contained the Breast proportion of nutrient capital of the various ecosystem compartments.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.2 no.2
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• pp.147-154
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• 1969

The larvae of the ark shell Anadare broughtoni(Schrenck) were grown at room temporature (approximately $20.4^{\circ}C$), and fed laboratory-cultured Cyclotella nana. The egg of the ark shell produced in the laboratory measured about $54.9\mu$ in diameter. The embryos gradually developed into larvae up to $110.8\mu$ shell length, $83.9\mu$ shell height and with shell breadth of $58.2\mu$ even in the absence of the algal food. Beyond this sire, however, the growth of the larvae was considerably retarded. The larvae showed better growth rate when they were fed the algal food two days after spawning, i. e., early straight-hinge stage. Daily rate of food consumption varies according to the larval sizes. But the rate increases considerably when the larvae begin to form umbos. In general the rate Is indicated by the following formula: $Y=0.0025161\;X^{2.76459}$. The growth experiments of the larvae indicate that the efficiency of food conversion was higher when fed centrifuged food. Regarding to the difference in the slopes of growth curve, centrifuged food showed better growth rate as compared to those grown with the non-centrifuged food. The smaller the larval size, the greater will be the difference in growth. The larvae began settling when they reathed 261.7 to $289.6\;{\mu}$ in shell length, 199.2 to $221.7\mu$ in shell height and 147.6 to $170.8\mu$ in shell breadth. The time which elapsed from spawning to the larval settlement was about 28 days. The mean growth of the larvae is indicated with regression line and exponential curve equations as follows. Regression line shell length. 94.3 to $133.9\mu$ : Y==85.22857+3.35000X 141.6 to $269.3\mu$: Y=10.83036X-36.05357 296.8 to $373.2\mu$ : Y=19.10000X-279.30000 shell height: 72.7 to $89.7\mu$ : Y=67.11429+2.15714X 108.4 to $206.4\mu$ : Y=8.31607X-27.45357 228.6 to $282.1\mu$: Y=173.46700+13.37500X shell breadth: 45.3 to $77.8\mu$ : Y=38.08510X+2.73570X 87.4 to $157.7\mu$: Y=5.77320X-5.99640 175.4 to $214.0\mu$: Y=19.65000X-114.13300 Exponential curve shell length. 94.3 to $373.2\mu$: Y=72.45 $e^{0.04697x}$ shell height: 72.7 to $282.1\mu$: Y=54,96 $e^{0.04720x}$ shell breadth: 45.3 to $214.0\mu$ : Y=39.82 $e^{0.04927x}$ The relationships between the shell length and shell height and between the shell length and shell breadth are indicated as follows- shell height: 72.7 to $98.7\mu$ : Y=12.87780+0.63817X 108.4 to $206.4\mu$ : Y=0.90220+0.76456X 228.6 to $282.1\mu$ : Y=25.02630+0.69156X shell breadth: 45.3 to $77.8\mu$:Y=0.81373Xx-31.18914 87.4 to $157.7\mu$ : Y=13.37549+0.53230X 175.4 to $214.0\mu$: Y=30.24328+0.49545X