• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.3
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• pp.105-114
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• 2017

The purpose of this study was to examine the effects of obesity at diagnosis on the prognosis of Korean breast cancer patients after classifying them according to their reproductive history and age by comparing the overall survival rate (OS) and disease-free survival rate (DFS). This study is a retrospective cohort study using 4181 breast cancer cases at one of the medical centers in Korea during the 3 year period from 2006 to 2008. We confirmed the levels of death and recurrence through a follow-up study completed in May 30. 2015. In conclusion, the parous patients had a lower OS than the non-parous patients (p=.000), and the younger patients below 40 years old had a lower OS and DFS than those who were 40 years old or older (p=.003, p=.000), while obesity did not affect the OS and DFS significantly. However, several subgroups in which obesity affected the OS and DFS were found after classifying the patients according to their reproductive history and age. For the subgroups classified by reproductive history, the obese patients had a lower OS and DFS than the non-obese patients in the subgroup in which the patients have a reproductive history (p=.001, p=.005). For the subgroups classified according to age, the obese patients had a lower OS and DFS than the non-obese patients in the subgroup in which the patients were 40 years old or older (p=.005, p=.014). Obesity affected the OS and DFS in the subgroup in which the patients were 40 years old or older and had a reproductive history (p=.000, p=.003). The results of this study show that obesity has an effect on the prognosis of breast cancer patients in the subgroups classified by reproductive history and age, whereas it has no effect on the OS and DFS of the patients when they are examined in their entirety. It also suggests that appropriate nursing intervention is needed for the subgroups in which obesity has effects on prognosis.

• Information Systems Review
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• v.22 no.1
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• pp.183-198
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• 2020

The development of IT increases the importance of understanding of IT-driven ecosystems. Platform business is the representative business model in the era of innovative IT-based businesses. However, it lacks the review research that entails ecosystem perspectives from traditional disciplines in which the perspective of ecosystem had been applied. Further most of platform research have focused on the comparison between ecosystems as a whole rather than exploration on complementors in the ecosystem who are selected and survive and, in turn, contributed to maintain the ecosystem to compete with other ecosystems. The current study listed highly cited papers from economics, sociological ecology, socio-technical ecology, organization studies, and marketing research which have cumulated research on ecosystems. And the three most critical features that determine the success of complementors, which are competition, relationality, and adaptability. Present study showed how the features were explained by each perspective from the different disciplines.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.10a
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• pp.279-280
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• 2002

우리나라에서는 연안어장의 수산자원을 증강시키기 위해 매년 인공종묘 넙치 치어방류를 실시하지만 이에 대한 효과조사가 미미한 것을 해결하기 위하여 넙치치어에 적합한 표지표를 찾고자 본 연구에서는 여러종류 표지표를 사용하여 시험어에게 표지표를 표지하여 표지어의 생존을, 표지표 부착을 그리고 표지어의 성장등을 검토하여, 재포시 어업인의 눈에 쉽게 표지어가 발견되고, 표지어의 생존율에 영향을 미치지 않고, 높은 표지표 부착율을 유지하면서 성장에도 영향을 미치지 않은 표지표를 찾고자 한다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.05a
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• pp.191-192
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• 2003

수산양식에 있어서 초기 치자어의 영양은 치자어의 생존 및 성장에 많은 영향을 미친다. 이와 같은 영양에는 주로 DHA와 EPA 등으로 많은 연구자들은 그 초점을 두고 있다. 그러나, 실제 어류에 있어서 부화 직후의 영양소 섭식 능력은 많은 종에 있어서 미지수로 종묘생산시 초기 감모기를 겪고 있으며 이 시기를 부화 후 first feeding 단계의 5∼10일로 잡고 있다. 그러나 이 초기 감모기를 지난 자치어는 rotifer와 Artemia 같은 살아있는 먹이생물을 이용하기에 충분하기 때문에 생존율에는 큰 영향이 없는 것으로 보고되어지고 있다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.229-230
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• 2001

최근, 물이 인류의 생존을 위협하는 문제로 인식되며 중요시되고 있으며, 이는 식수에 대한 국민의 생존권 및 건강권 뿐 아니라 청정하지 못한 수질에서 어획 또는 양식되는 수산자원의 안전성과도 결부되어 중요하게 인식되고 있다. 이는 중금속 뿐 아니라 세균이나 바이러스 등이 먹이연쇄를 통하여 건강을 위협할 수 있기 때문이다. 이로부터 다양한 수처리 기법이 개발되고 있으며, 그 중 하나인 화학적 산화법은 수중 오염물을 화학적으로 산화시켜 생분해성이 좋아지게 하거나 흡착법으로 쉽게 제거될 수 있는 최종 또는 중간 생성물로 변화시키는 방법으로서 염소, 오존, 과산화수소, 과망간칼륨 등이 통용되고 있다. (중략)

• Digital Contents
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• no.7 s.98
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• pp.30-37
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• 2001

서비스업자들은 선택의 기로에 놓여있다. 잘못된 선택이 그들을 파국으로 치닫게 만들지도 모른다. 많은 네트워크 전문가들은 지난 몇년간에 걸쳐 네트워크 분야는 많은 성장을 한 것은 사실이나 앞으로 다가오게 될 네트워크를 생각한다면 현재의 네트워크는 그 경쟁력을 상실하게 될 것이란 견해가 지배적이다. 이 말은 생존과 생존 이상의 성공을 원하는 서비스업자라면 자신의 경쟁력을 한껏 높여줄 기술을 제대로 선택해야 된다는 뜻이기도 하다. 현재 많은 기술들이 개발자와 사용자에게 있어 관심의 대상으로 떠오르고 있다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.373-374
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• 2001

조개류 발생배의 냉동보존은 백합, Meretrix lusoria(Chao et al., 1997), 지주담치 Mytilus edulis (Toledo et al., 1989), 참굴 Crassostrea gigas(Renard, 1991; McFadzen, 1992; Gwo, 1995; Naidenko, 1997; Chao et al., 1997)에서 꾸준히 연구되어 왔다. 특히 Crassostrea 속의 발생배에 대한 냉동보존 연구가 많이 이루어졌으며, 해동후 일정시간 배양하여 발생배의 생존율을 파악한 결과들이었다. (중략)

• Proceedings of the KAIS Fall Conference
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• 2007.11a
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• pp.45-48
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• 2007

최근 모바일산업은 급격하게 발전하고 있다. 이러한 경쟁은 날로 더 심화되고 있으며 이동통신사들은 이러한 경쟁에서 살아남기 위한 생존경쟁이 치열하다. 본 연구에서는 모바일기기의 속성과 고객만족간의 관계를 살펴봄으로써 이동통신사들의 생존전략에 기여하고자 한다. 따라서 본 연구는 모바일기기의 속성과 고객만족간의 영향관계를 살펴보고자 한다.

• Journal of radiological science and technology
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• v.37 no.1
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• pp.21-28
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• 2014

Cultured pancreatic beta cells and nerve cells, it is given normal condition of 10% FBS (fetal bovine serum), 11.1 mM glucose and hyperglycemia codition of 1% FBS, 30 mM glucose. For low LET X-ray irradiated with 0.5 Gy/hr dose-rate(total dose: 0.5 to 5 Gy). Survival rates were measured by MTT assay. When non irradiated, differentiated in the pancreatic beta cells experiment is hyperglycemia conditions survival rate compared to normal conditions survival rate seemed a small reduction. However increasing the total dose of X-ray, the survival rate of normal conditions decreased slightly compared to the survival rate of hyperglycemia conditions, the synergistic effect was drastically reduced. When non irradiated, undifferentiated in the nerve cells experiment is hyperglycemia conditions survival rate compared to normal conditions survival rate seemed a large reduction. As the cumulative dose of X-ray normal conditions and hyperglycemia were all relatively rapid cell death. But the rate of decreased survivals by almost parallel to the reduction proceed and it didn't show synergistic effect.

• Korean Journal of Environmental Biology
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• v.40 no.3
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• pp.275-280
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• 2022

Suspended solids play an important role in the growth and survival of aquatic organisms. The marine zooplankton species tested in this study were Tigriopus west (Copepoda) and Haustorioides koreanus (Amphipoda) sampled from the intertidal zone, including Artemia nauplii(Branchiopoda) hatched from cysts. The study design included six concentrations (0, 50, 100, 250, 500, and 1,000mg L^-1) of the suspended test particles assayed in triplicate. Experimental cultures in 500 mL-round polycarbonate bottles were subsampled after 96 h to count dead zooplankton. The culture bottles were agitated at 4 RPM on a rotating wheel at 23℃ and 30 PSU. The survival rates of Artemia nauplii and T. west were not affected by suspended solid concentrations higher than 50.0 mg L^-1, whereas the survival rate of H. koreanus decreased with increasing concentrations (p<0.05). In conclusion, H. koreanus and T. west, which were continuously exposed to suspended solid concentrations higher than 50.0 mg L^-1, were affected by low-intensity ecological stress. However, in the case of H. koreanus, a concentration of 50.0 mg L^-1 may be considered to be the limit of tolerance to suspended solids, suggesting that the number of individuals who eventually die will increase if continuously exposed.