현장에서 ⑤ 포스코에너지 베트남 화력발전소 -베트남 최대 민간 발전소 가동으로 해외시장 향한 교두보 확보

양상근 포스코경영연구소 2015 CHINDIA Plus Vol.108 No.-

3-모드 이동형 사격 게임기 설계 및 구현

양상근(Yang Sang Geun),김태연(Kim Tae Yeon),박상준(Park Sang Jun),차지원(Cha Ji Won),강진호(Jinho Kang) 한국통신학회 2023 한국통신학회 학술대회논문집 Vol.2023 No.11

서식환경이 변화된 용담호의 어류상 및 어류군집 특성

양상근 ( Sang Geun Yang ),조용철 ( Yong Chul Cho ),양현 ( Hyun Yang ),강언종 ( Eon Jong Kang ) 한국환경생물학회 2012 환경생물 : 환경생물학회지 Vol.30 No.1

Abstract - From April to November 2009, we performed field investigation to survey the characteristics of fish fauna and fish community structure inhabited in Yongdam reservoir in the upper Geumgang, which is changed into flat-water zone from flow-water zone by blocking the continuity by the gigantic submerged weir built in the upstream of Geumgang. 15 species belonging to 8 families were collected from natural habitat (St. 1) where its natural characteristics is well preserved, and 11 species were korean endemic fish species. 24 species belonging to 10 families were collected at the down region of Yongdam dam (St. 3), which might be affected by the change of water environment due to the dam, and 11 species were korean endemic fish species. On the other hand, 20 species belonging to 7 families were collected inside Yongdam reservoir (St. 2) which is changed into flat-water zone from flow-water zone by the dam reservoir, and 6 species were korean endemic fish species. In the dam reservoir, due to Yongdam dam built in the upper Geumgang, the original flow-water zone fish such as Acheilognathus koreensis, Pseudopungtungia nigra, Coreoleuciscus splendidus, and Gobiobotia macrocephala were disappeared, and instead, the kinds of fish habitating in the flat-water zone tend to increase rapidly, such as Carassius auratus, Opsarichthys uncirostris amurensis, Hemiculter eigenmanni, Zacco platypus, and Lepomis macrochirus. Relative abundance of the insective fish was 66.7% at St. 1, 40.0% at St. 2, and 54.2% at St. 3. In order to preserve endemic fish species and aquatic ecosystem, it is desirable to minimize the artificial installation in the upper river, such as a large scale dam which can affect the habitat and if inevitable, it is required to prepare preservation measures when building facilities.

부시리 Seriola lalandi 종자생산을 위한 생물학적 특성

양상근(Sang-Geun YANG),김정현(Jung-Hyun KIM),김효원(Hyo-Won KIM),안철민(Cheul-Min AN),지승철(Seung-Cheol JI),정민환(Min-Hwan JEONG),명정인(Jeong-In MYEONG),이영돈(Young-Don LEE),김대중(Dae-Jung KIM) 한국수산해양교육학회 2018 水産海洋敎育硏究 Vol.30 No.5

인공사육에 의한 멸종위기종 꼬치동자개(Pseudobagrus brevicorpus)의 성장과 성성숙 특성

양상근 ( Sang Geun Yang ),강언종 ( Eon Jong Kang ),김광석 ( Kwang Seog Kim ),방인철 ( In Chul Bang ) 한국환경생물학회 2009 환경생물 : 환경생물학회지 Vol.27 No.4

멸종위기에 처한 꼬치동자개(Pseudobagrus brevicorpus)의 보전과 복원을 위한 기초 자료를 제공하기 위하여 인공사육 환경에서 사육된 종묘에서 친어까지의 성장과 성성숙 특징들을 조사하였다. 부화 후 698일의 인공사육 기간 동안 전장과 체중은 각각 89.22±10.29mm와 70.93±7.68 g로 성장하였고, 전장 (TL)과 체중(BW)의 관계는 BW=5×10(-5) TL2.678 (R2=0.995)로 나타났으며, 생존율은 74.2%였다. 암컷과 수컷의 성비는 1(암컷, 471):1(수컷, 473)이었다. 부화 후 663일째에 암컷의 전장과 체중은 각각 78.38±0.92 mm과 6.38±0.20 g로 나타나 수컷의 87.44±1.07mm와 8.43±0.31 g에 비해 높았으나, 비만도는 암컷이 수컷에 비해 유의적으로 높은 값을 보였다(P<0.05). 암컷 1마리당 포란수는 평균 734개(508~867개)였고, 난경은 0.04~1.65mm의 범위를 보였다. 인공 사육된 친어는 만 2년이 되던 6월 초순에 인간 융모성 고나도트로핀(human chorionic gonadotropin: HCG)을 주사한 후 1~2일 사이에 산란이 가능하였고, 부화된 개체는 평균 216마리(113~338마리)였다. The stumpy bullhead (Pseudobagrus brevicorpus) endemic to Korea is one of critically endangered freshwater fish species. To provide baseline data for its captive breeding and reintroduction we investigated basal characteristics on its growth and sexual maturation in an artificial rearing environment. After 698-day rearing the stumpy bullhead grew up to 89.22±10.29 mm in total length (TL) and 70.93±7.68 g in total body weight (BW)(BW=5×10(-5) TL2.678; R2=0.995), and showed survival rate of 74.2%. The sex ratio was 1 (471 females): 1 (473 males), and males (TL=87.44±1.07mm; BW=8.43±0.31 g) showed significantly faster growth than females (TL=78.38 ±0.92mm; BW=6.38±0.20 g) after 663-day rearing. However, condition factor of females was significantly higher than that of males (P<0.05). The number of eggs per female ranged from 508 to 867 (average 734), and their diameters ranged from 0.04 to 1.65 mm. The females which reared about two years in the laboratory condition was able to spawn in the early June after 1~2 days of human chorionic gonadotropin (HCG) injection. The number of hatched fries ranged from 113 to 338 (average 216).

사육밀도와 수온에 따른 자바리( Epinephelus bruneus )의 적응특성

양상근 ( Sang Geun Yang ),지승철 ( Seung Cheol Ji ),문태석 ( Tae Seok Moon ),손맹현 ( Maeng Hyun Son ),김경민 ( Kyong Min Kim ),허성표 ( Sung Pyo Hur ),이치훈 ( Chi Hoon Lee ),이영돈 ( Young Don Lee ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6

The aim of this study was to investigate the effects of stocking density and water temperature in the rearing of the longtooth grouper Epinephelus bruneus . Juvenile fish [mean body weight (BW)=6.9±1.1 g] were raised for 6 weeks, in four density groups of 0.25, 0.5, 0.75, and 1 individuals/L. There were no significant differences in weight gain (WG) or specific growth rate (SGR) among the density groups; however, both WG and SGR tended to be higher in the low density group. After 6 weeks of rearing in temperature-controlled water (23.6±0.8°C) and ambient temperature water (19.6±1.8°C), there were no significant differences in WG or SGR values, but both tended to be higher in the temperature controlled water. The feed efficiency (FE) and daily feed intake (DFI) and WG values were also higher in the temperature-controlled water than in the ambient temperature water. WG values were lower at lower water temperatures. The same pattern was observed for SGR, FE, and FI, all of which exhibited lower values at lower temperatures. In particular, WG, SGR, and FE values all tended to decrease at the 16°C water temperature. The effects of water temperature on 1-year fish (mean BW = 387.6±30.2 g) and 3-year fish (mean BW = 1,338.3±73.8 g) were similar to those of the juvenile fish (0-year fish).

수온, 광조건 및 밀도에 따른 자바리 (Epinephelus bruneus)의 산소소비 특성

양상근 ( Sang Geun Yang ),지승철 ( Seung Cheol Ji ),문태석 ( Tae Seok Moon ),김경민 ( Kyung Min Kim ),정민환 ( Min Hwan Jeong ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.2

This study investigated the effects of water temperature, photoperiod and population density on oxygen consumption (OC) in the long tooth grouper (Epincphelus bruneus). DC` rate in the longlooth grouper at 15, 20, and 25°C were 85.9±6.9, 107.5±10.1, and 164.0±19.2 mg O2kg-1h1, respectively, indicating a linear increase in OC with water temperature. Photoperiod was regulated in accordance with the light (09:00-21:00 h. L) and dark (21:00-09:00 h, D) phases of the did cycle (12L/12D), with a water temperature of 15, 20, or 25°C`. DC` rates during the light and dark phases were 83.8±5.4.88.1±7.8mg 00 kg-1 h-1, respectively, at 15°C and 111.2±12.3 and 103.7±5.7 mg O, kg-1 h-1 at 20°C. No significant differences were observed between the light and dark phases (P> 0.05). at 25°C the OC rates were 168.8±24.3 and 159.2±11.4mg O2 kg-1 h-1 during the light and dark phases. respectively, indicating that DC. is higher during daylight than nighttime. OC tates at 55.4, 88.4. 118.8, and 145.1 g L-1 were 252.0±11.6, 219.0±8.7, 206.7±11.4, and 208.8±11.4 mg O2, kg-1h-1, respectively, indicating a decrease in DC with increasing population density. However, no significant difference was observed between the values for 118.8 g L and 145.1 g L (P> 0.05).

호박분말 급여가 돈육의 품질 특성에 미치는 영향

진상근,양한술 경상대학교 농업생명과학연구원 2012 농업생명과학연구 Vol.46 No.2

본 실험은 호박분말 급여가 돈육의 품질 특성에 미치는 영향을 조사하기 위하여 평균 개시체중 64.5 kg인 총 20두의 3원 교잡종(Landrace×Yorkshire×Duroc)을 대상으로 호박분말 급여량을 0, 2, 5 및 7%로 처리구별 5두씩 공시하여 출하전 30일간 급여하였다. 호박분말 급여구에서 높은 수분 함량 및 조지방 함량을 나타내었다. 명도(lightness) 값은 처리구들 간 유의적인 차이가 나타나지 않았으나(p>0.05), 적색도(redness)는 2% 및 7% 호박분말 급여구가 대조구에 비해 유의적으로 높은 값을 나타내었다. 육즙 및 가열감량은 모든 처리구에서 유의적인 차이가 없었으나, 5% 호박분말 급여구에서 높은 pH 및 모든 호박분말 급여구에서 낮은 전단가 값을 나타내었다. 호박분말 급여구에서 대조구에 비해 낮은 콜레스테롤 함량을 보이며, 호박분말 급여수준이 증가할수록 콜레스테롤 함량이 감소하였다. 또한 호박분말 급여구에서 높은 myristic acid(C14:0) 함량을 보인 반면, 2% 및 5% 호박분말 급여구에서 높은 palmitoleic acid(C16:1) 함량 나타내었다. 따라서 호박분말 급여는 돈육의 사후 pH와 수분함량을 높이고, 전단가 및 콜레스테롤 함량을 감소시키는 등 돈육 품질을 개선시키는 것으로 나타났다. This study was carried out to compare the quality properties of pork loin from pigs fed different levels of pumpkin (Cucurbita spp.) powder. Twenty female pigs (Landrace×Yorkshire×Duroc) were fed either a control (commercial diet, based on corn and soybean meal) or the control diet supplemented with 2, 5 and 7% of pumpkin powder for 30 days. Dietary supplementation with pumpkin powder resulted in significantly higher moisture and fat contents in pork loin compared to the control (p<0.05). Dietary supplementation with pumpkin powder led to increased redness, pH and decreased shear force value and cholesterol levels in pork loin (p<0.05). In fatty acid composition, dietary supplementation with 2% or 5% pumpkin powder increased the palmitoleic acid (C16:1) in pork loin. These data suggest that supplementing pig diets with pumpkin powder can produce pork loin with low cholesterol levels and can enhance quality properties because pork loin fed a pumpkin powder-supplemented diet had better moisture, fat contents and tenderness.

디자인사고 사례연구 및 실행방법론

양상근(SangGuen Yang),한인구(Ingoo Han) 한국경영학회 2021 Korea Business Review Vol.25 No.1

급변하는 환경하에서 기업들은 당면한 문제를 해결하기 위하여 혁신을 추구해 왔다. 많은 기업들이 혁신을 실행할 방법을 탐색하고 있다. 최근 미국 및 유럽에서 실행을 강조하는 방법론인 디자인사고를 혁신의 도구로 활용해서 성과를 내는 사례가 증가하고 있다. 디자인사고는 본래 디자이너들의 창의적인 문제를 풀기 위하여 시작되었지만 2000년대 이후에는 경영의 문제를 해결하기 위해 활용되기 시작하였다. 본 연구는 디자인사고를 경영문제를 풀기 위해 활용하는 세 기업의 사례를 분석하고 이 사례로부터 시사점을 도출할 것이다. 사례연구의 결과를 토대로 한국 기업들이 디자인사고를 실행하기 위하여 적용할 수 있는 3단계 방법론을 제시할 것이다. 3단계 방법론은 디자인사고를 준비하는 단계, 디자인사고를 문제해결을 위해 적용하는 단계, 디자인 사고의 문화를 정착시키고 외부에 확산하는 단계로 구성되어 있다. 이 연구의 기여는 한국의 경영자들이 디자인사고를 적용할 때 참고할 수 있는 실제 사례 및 실행방법론을 제시한 것이다. Companies pursue innovations to meet the business challenges they encounter in a rapid changing environment. Many companies are searching for the ways on how to implement the innovation. Recently in the US and Europe, there has been a number of successful cases that utilize design thinking for innovation, which is emphasizing actual implementations. The design thinking used to solve the creative problems for designers while the design thinking has been applied in business field since 2000’s. This study analyzes three real cases which use design thinking to solve business problems and induced the implications from these cases. Based on the results from these cases, this study provides a three-stage methodology for implementing the design thinking for Korean companies. Three stages proposed in this study are the preparation stage for initiating design thinking, the applying stage where company uses design thinking for problem solving, and the proliferation stage where the design thinking dwells as corporate culture and proliferates the phenomenon outside the company. The contribution of this study is to provide managers of Korean companies with three real cases and implementation methodology which they can refer to when they are adopting design thinking for solving their business problems.

자주복, Takifugu rubripes의 性成熟과 호르몬 處理에 의한 人工採卵에 關한 硏究

양상근(Sang-Geun YANG),이영돈(Young-Don LEE),변충규(Choong-Kyu PYEN) 한국수산과학회 양식분과 1994 韓國養殖學會誌 Vol.7 No.4