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이동섭,심현진 한국지구과학회 2024 한국지구과학회지 Vol.45 No.4
We explored the effect of galaxy-galaxy interaction on the FIR-radio correlation of star-forming galaxies bycomparing the qFIR parameter distribution between interacting and non-interacting galaxies. Our sample galaxies wereselected from the SDSS Stripe 82 region, where relatively deep optical images are available in addition to ancillary FIRand radio data. The qFIR values were 2.73±0.49 and 2.53±0.90 for interacting and non-interacting galaxies, respectively. The t-test results indicated that the difference in qFIR values between the two categories is not statistically significant. Ourfindings align with those of previous studies suggesting that either FIR excess or radio excess occurs only transientlyduring brief timescales in the merger stages, rather than persisting throughout the majority of merger events identified byfeatures such as tidal tails or double nuclei.
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이동섭,김일남,강동진,김동선,Lee, Tong-Sup,Kim, Il-Nam,Kang, Dong-Jin,Kim, Dong-Seon 한국해양학회 2007 바다 Vol.12 No.3
울릉분지의 일부 저층수에서 아질산염의 존재가 확인된 것은 용존산소가 매우 풍부한 환경에서 예상되지 않던 결과로서 괄목할만한 사실이었지만 과학적으로 설명되지 않았다. 오캄의 제안에 따르면 가능한 몇 가지 설명 가운데 대륙사면 표층 퇴적물 안에서 일어나는 탈질산화의 중간산물로써 해수로 유출되는 것이 제반 여건과 가장 잘 부합된다. 그런데 울릉분지에서는 이런 탈질산화에 따른 무기질소의 손실을 보상하는 특별한 방법이 존재하지 않은 것으로 보이며 이는 현재 심해수의 낮은 질소: 인의 비와 일맥상통한다. 여기에 열염순환을 약화시키는 온난화의 효과가 가중될 경우 현재의 생물펌프가 위축될지 또는 현재 식물플랑크톤 군집을 대체하는 새로운 군집으로 바뀌게 될지도 모른다. 그 경우 이는 동해 생태계가 직면하게 될 심각한 도전이 될 것이다. 한편으로는 수중에 산화제가 풍부함에도 불구하고 표층 퇴적물의 유기탄소함량이 아주 높게 나타나서 울릉분지에서 질소(유기물)의 순환에 대해 풀리지 않는 문제가 여전히 남아있다. Presence of bottom water nitrite in the Ulleung Basin was remarkable because it is totally unexpected phenomenon at such an oxygen-rich environment. Yet no scientific explanation was set forward. Of several plausible explanations, following the Ockham's suggestion, a leaching of nitrite as an intermediate product of denitrification in the top sediment at the slope is most agreeable to given environmental settings. There seems no complementary process to make up the loss of N in the Ulleung Basin, which seems contribute to the characteristically low N:P ratio in the deep waters. If warming proceeds that weakens the thermohaline circulation, a current biological pump may stall and the phytoplankton assemblage might replaced drastically. If so this will pause an utmost challenge to the ecosystem of the East/Japan Sea. Still there remains a contradictory sedimentary signature that requests further explanation regarding the N (or organic C)-cycle such as extraordinarily high organic carbon content despite abundant oxidants in the overlying waters.
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이동섭,최용득 한국인사관리학회 2013 한국인사관리학회 학술대회 발표논문집 Vol.2013 No.1
불확실성과 복잡성이 지속적으로 높아지고 있는 오늘날의 조직환경의 변화는 조직내 집단 활용의 필요성과 더불어 집단구성원들 간의 신뢰의 중요성을 부각시키고 있다. 집단을 이루는 구성원들간의 신뢰를 통한 개방적인 상호의사소통과 자발적인 협력이 집단목표를 성취하기 위한 과정에서 중요한 역할을 할 것으로 기대되기 때문이다. 그러나 신뢰의 기능에 대한 이러한 일반적 기대에도 불구하고 신뢰의 실질적 효과와 효과가 발현되는 메커니즘에 대한 이해는 아직 부족한 실정이다. 본 연구는 집단수준에서 신뢰가 가지는 함의에 대한 이해 증진을 위해 집단구성원들 간의 대인신뢰를 정서기반 신뢰와 인지기반 신뢰로 구분하고 집단성과와의 관계를 살펴보았다. 또한 집단신뢰와 성과 간의 관계를 매개하는 변수로 집단효능감의 역할을 고찰하였다. 가설검증을 위한 자료는 학생들로 구성된 71개팀 357명으로부터 수집되었다. 실증관계에 대한 보다 명확한 해석을 위해 변수별로 시차를 둔 측정이 이루어졌으며, 다양한 측정방식과 자료원이 활용되었다. 분석 결과, 집단신뢰의 두 유형 중 정서기반 신뢰가 집단성과와 유의한 관계를 갖는 것으로 나타났으며, 집단효능감이 집단구성원들의 정서기반 신뢰와 집단성과 간의 관계를 완전매개하는 것으로 나타났다. 이러한 결과는 성과에 대한 집단신뢰의 역할과 함께 집단신뢰의 긍정적인 효과를 전달하는 동기부여적 메커니즘의 이해에 기여하고 있으며, 이에 따른 다양한 이론적, 실무적 시사점을 가진다. Tasks in today's organizations are becoming increasingly complex and interdependent. As a result, many organizations are using groups, instead of individuals, as their basic operation units. However, not every coordination or cooperative issue among group members can be pre-identified and prescribed by detailed legal contracts or job descriptions. Rather, work groups need to rely on interpersonal trust relationships for their successful functioning. Researches have acknowledged that intragroup trust is a key factor in open communication, cooperation, and coordination which contribute group performance. However, in spite of this general expectation of the positive effect of trust on group effectiveness, relatively little has been known about the direct effect of intragroup trust on group performance and the underlining mechanisms that transmit the effects of intragroup trust to performance. It seems that this limited understanding of the role of intragroup trust in group functioning may be attributed to the fact that prior research on trust has either emphasized the importance of trust in the organizations at the conceptual level or focused on the consequences of a trusting relationships between leader and subordinate at the individual level. The purpose of the present study is to explore the relationship between intragroup trust and group performance, focusing on an underlying mediation mechanism of the relationship. First, drawing on the trust literatures across various disciplines, we focused on two principal forms of intragroup trust (i.e., cognition-based trust and affect-based trust) for more integrative understanding for the nature of trust among group members. Then, we investigated the effect of cognition-based intragroup trust and affect-based intragroup trust on group performance. We also investigated how the two forms of intragroup trust affect the performance of groups. Specifically, we propose that group efficacy plays a mediating role in the relationship between intragroup trust and group performance. We tested the proposed hypotheses using a sample of 71 project groups consisting of 357 undergraduate students. The results indicated that affect-based intragroup trust is positively related to group performance but cognition-based intragroup trust is not. The results also showed that group efficacy mediates the relationship between affect-based intragroup trust and group performance. Findings of this study contribute to the research literature in several ways. First, it contributes to a better understanding of the function and role of intragroup trust by distinguishing two forms of intragroup trust and identifying their relationships to group performance. Second, the finding of the mediating role of group efficacy in the relationship between affect-based intragroup trust and group performance extends our limited understanding of motivational mechanism through which intragroup trust affects group performance. Future research needs to examine separated motivational processes that can further enhance our understanding of the nature and function of two forms of intragroup trust on group effectiveness. Our findings offer several practical implications for organizational managers. First, mangers need to know that group members can trust peers not only based on their ability and expertise but also emotional support and bonds. Specially, the current findings demonstrate the importance of affect-based trust relationships among group members. Managers, therefore, need to pay a particular attention to affective factors of group members' relationships and to develop a positive affective climate which can facilitate constructive social interaction among group members. Furthermore, it may be that affect-based intragroup trust plays a relatively more important role in the groups that consist of members without a formal leader or a hierarchical structure among them. Thus, managers may need to manage trust relationship
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