전시·컨벤션산업의 전략적제휴 성공요인에 관한 연구 : 전시·컨벤션기획업체와 주최자를 중심으로

吳瑛彬 翰林大學校 2003 국내석사

심방이뇨호르몬 분비와 지방대사에 있어서 안지오텐신의 병태생리학적 역할

오영빈 전북대학교 대학원 2012 국내박사

Angiotensin II (Ang II) and angiotensin-(1-7) [Ang-(1-7)] are primary effector molecules in renin-angiotensin system and cause a variety of functions in body fluid metabolism. Atrial natriuretic peptide (ANP) is related with both two peptides. However, the roles of angiotensin peptides on ANP secretion are still controversial. The aim of the present study is to investigate the roles of Ang II and Ang-(1-7) on ANP secretion and metabolism in physiological and pathological conditions. An isolated perfused beating atria model and radioimmunoassay were used. In vivo experiments were also performed in Sprague-Dawley rats and mice. Radioimmunoassay, real-time polymerase chain reaction, western blot analysis, and histological analysis were used. Ang II decreased high stretch-induced ANP secretion and concentration in isolated perfused beating atria. Antagonist of Ang II receptor type 1 (AT1R) not only suppressed the effect of Ang II, but also had a self-stimulatory effect on ANP secretion. In two-kidney, one-clipped (2K1C) hypertensive rats, the effects of Ang II and AT1R antagonist on ANP secretion were more accentuated. On the other hand, a disruption of caveolae with methyl-?-cyclodextrin (MbCD) caused abolishment of the effects of Ang II and AT1R antagonist in high-stretched condition. In the presence of MbCD, the proportion of proANP to ANP in secreted ANP was increased. These results indicated : i) Ang II generated endogenously by atrial stretch suppressed stretch-induced ANP secretion via AT1R, and ii) disruption of caveolae altered AT1R-mediated Ang II effect on ANP secretion and its effect might be mediated by processing of proANP. Next, the role of Ang-(1-7) on lipolysis was investigated. Ang-(1-7) increased glycerol release and pretreatment with antagonist of Mas R or inhibitors of phosphatidyl inositol 3-kinase (PI3K) and nitric oxide synthase (NOS) blocked lipolytic effect of Ang-(1-7). Elevated plasma Ang-(1-7) level induced by chronic administration of angiotensin converting enzyme (ACE) inhibitor caused decrease of weight gain, but did not cause adipocyte hypotrophy. These results indicated that Ang-(1-7) stimulated lipolysis through activation of Mas/PI3K/eNOS signaling, and its effect might not relate to adipocyte hypertrophy. It has been reported that Ang II and AT1R related with Januse kinase (JAK)/signal transducers and activators of transcription protein (STAT) signaling are involved in the pathogenesis of I/R injury. In the present study, the role of JAK3 on I/R injury was investigated. Increases of I/R-induced plasma creatinine phosphokinse (CPK) and lactate dehydrogenase (LDH) levels, infarct area, and apoptosis were decreased in JANEX-1 (a selective JAK3 inhibitor) treated-mice and JAK3 -/- mice. I/R-induced reduction of left ventricular function was improved in both groups. The expression of JAK2/STAT3 signaling was increased by inhibition of JAK3. These data indicated that inhibition of JAK3 improves cardiac functions and injury in I/R and its effect may be due to activation of cardioprotective JAK2/STAT3 pathway. In conclusion, these results suggest that endogenous Ang II suppresses stretch-induced ANP secretion via AT1R and disruption of caveolae alters an effect of Ang II. Ang-(1-7) stimulates lipolysis through Mas R/PI3K/eNOS signaling and inhibition of JAK3 improves cardiac function and injury against I/R. So, Ang II and Ang-(1-7) have critical antagonistic roles in cardiovascular physiology and lipid metabolism.

병사들의 스트레스와 군복무 적응과의 관계에서 사회적 관계망의 조절효과

오영빈 상명대학교 대학원 2016 국내석사

ABSTRACT Moderating Effects of social networks on the relationship between stress and adaptation of military soldiers Youngbin Oh Dept. of Human Service Business Administration The Graduate School Sangmyung University This paper is a study of how stress can effect the soldiers currently under the mandatory military service and the influence of stress on the correlation between social life and the adaptation of military service. To investigate hese matters, this paper will show how the impact of the social life can effect the soldier's adaptation during the period of their service. Total of 300 soldiers who are currently under duty participated on the survey. As a tool for measuring, the study used Stress Scale of social networks along with the measurements of the military adaptation to accurately study the correlations between the two categories. To validate the research, statistics were performed by simple and multiple regressions plus the analysis of the frequency and correlation between the two subjects. The result of the conclusion and the debate on the study show as follows. First of all, 'stress' has a negative effect towards the adaptation if the military service. Second of all, social life of the soldier correlates with both the stress and the adaptation of the military service. These results indicate that having positive social network effects the soldiers military life as well. Therefore, the research suggests that the social network that were build up before they sere the military is the significant feature that can reinforce the ability to deal with stresses and the adaptation in army. In order to complete military service successfully, it is necessary to analyze the functional and structural aspects of soldier's social network and make institutional development that can maintain and srengthen the soldiers' social network. 국 문 요 약 병사들의 스트레스와 군복무 적응과의 관계에서 사회적 관계망의 조절효과 본 논문은 병역의무를 이행하기 위해 입대한 병사들의 인구 사회학적 특성의 상태는 어떠한 수준인가를 조사하고, 스트레스가 군복무 적응에 미치는 영향과 사회적 관계망의 조절효과에 대한 연구이다. 연구목적 달성을 위한 연구문제로 병사들의 스트레스와 군복무 적응과의 관계에서 사회적 관계망의 조절효과에 대한 영향을 확인하고자 한다. 본 연구의 대상은 향토사단에 복무하는 병사 300명을 대상으로 하였다. 측정을 위한 도구로서 사회적 관계망의 스트레스 척도, 구조적․기능적 특성 척도, 군복무 적응 척도를 사용하였다. 연구문제에 대한 검증을 위한 통계분석은 빈도분석과 상관분석, 단순회귀분석과 다중회귀분석을 실시하여 결과를 분석하였다. 본 연구의 결과 및 논의를 바탕으로 결론과 한계점을 제시하면 다음과 같다. 첫째, 병사들의 스트레스는 군복무적응에 부(-)적인 상관관계가 있다. 둘째, 병사들의 사회적 관계망은 스트레스와 군복무 적응의 관계에서 긍정적으로 유의미한 상관관계를 나타낸다. 이러한 결과는 병사들의 사회적 관계망이 스트레스 상황하에서도 군복무 적응에 긍정적인 영향력이 있다는 것을 나타내고 있다. 따라서 군 입대 이전에 형성된 사회적 관계망이 군복무에서 받는 스트레스에 대처할 능력과 군복무 적응력을 높여주는데 얼마나 중요한가를 시사하고 있다. 따라서 군대라는 특수한 환경의 조직에 조기에 동화되어 적응하여 건강하고 성공적인 군 복무를 이수하기 위해 병사들의 사회적 관계망의 구조적 ․ 기능적 특성을 파악하고 사회적 관계망의 유지와 강화를 위한 제도적 발전이 요망된다.

아동의 자기표현능력과 자아존중감이 학교생활적응에 미치는 영향

오영빈 인천대학교 대학원 2019 국내석사

The purpose of this study is to find out how self-expression and self-esteem affect elementary school students' school life, especially how the are related to their adaption to it. Participants were 263 students (134 male and 129 female 5th and 6th graders) from 4 elementary schools in Incheon-city. The results were as follows: First, Self-expression skills did not differ depending on the grade and gender. Self-esteem is relatively higher for boys than girls, but there was no difference between in grades. When it comes to school life adaptation, girls showed that they were more comfortable with teachers than boys, but there was no difference in grades. Second, it appears that there is a positive correlation between self-expression and sub-factor of school life adaptation, so the higher the self-expression ability, the better the school life. Students who deliver their opinions clearly with verbal and nonverbal expressions have better relationship and friendship with teachers, and also more easily adapt to school classes. Also, there is a positive correlation between self-respect and subfactors of school life adaptation, showing that the higher the self-esteem, the better the school life adaptation. Third, a nonverbal factor in the sub-variance of self-expression ability and self-esteem affected their relationship with teachers. The high self-esteem and good non-verbal expression like gesture among self-expression skills affect teacher-student relationships, but the self-esteem is more influential. Self-esteem and content / voice factors in sub-variates of self-expression ability affected the friendship with classmates, and they showed their influence in following order: self-esteem - speech - content elements. In other words, having a high sense of self-respect and expressing one's thoughts and opinions clearly by using accurate words voice expressions affect friendship, but above all, self-esteem is most influential. Self-esteem and content / non-verbal factors in sub-variated of self-expression skills affected school classes, and they showed their influence in order of follows: self-esteem, non-verbal, and content elements. In other words, both having high self-esteem and communicating well about what they want to express clearly using non-verbal expressions affects school classes, but above all things, self-esteem has a greater influence on school adaptation. 본 연구의 목적은 초등학생의 자기표현능력과 자아존중감이 학교생활적응과 어떠한 관계가 있고, 자기표현능력과 자아존중감이 학교생활적응에 어떠한 영향을 미치는지를 알아보는 데 있다. 인천광역시 소재 초등학교 5학년, 6학년 남학생 134명, 여학생 129명, 총 263명을 연구대상으로 설문조사 했다. 본 연구의 결과는 다음과 같다. 첫째, 자기표현능력은 학년과 성별에 따라 차이가 없었다. 자아존중감은 남학생이 여학생보다 상대적으로 높게 나타났지만 학년에 따라서는 차이가 나타나지 않았다. 학교생활적응에서는 여학생이 남학생에 비해 교사와의 관계를 더 원만히 함을 알 수 있었지만, 학년에 따라서는 차이가 나타나지 않았다. 둘째, 자기표현능력과 학교생활적응 하위요인들 간에는 모두 정적 상관이 있는 것으로 나타나 자기표현능력이 높을수록 학교생활에 더 잘 적응한다는 것을 알 수 있었다. 자신이 전달하고자 하는 내용을 음성적, 비언어적인 표현을 사용하여 정확하게 전달할수록 교사관계, 교우관계가 원만하고 학교수업 적응을 잘한다는 의미이다. 또한 자아존중감과 학교생활적응 하위요인들 간에도 모두 정적 상관이 있는 것으로 나타나 자아존중감이 높을수록 학교생활적응을 잘한다는 것을 알 수 있다. 셋째, 자아존중감과 자기표현능력 하위변인 중 비언어적 요소가 교사관계에 영향을 미쳤다. 자아존중감이 높고 자기표현능력 중 손발짓 등의 비언어적 표현을 잘하는 것이 교사관계에 영향을 미치지만, 그 중 자아존중감이 원만한 교사관계에 더 큰 영향력을 보인다. 자아존중감과 자기표현능력 하위변인 중 내용적 요소, 음성적 요소가 교우관계에 영향을 미쳤고, 자아존중감, 음성적 요소, 내용적 요소 순으로 영향력을 나타냈다. 즉, 자아존중감이 높고 자신의 생각이나 의견을 표현할 때 말의 내용을 분명하게 하고 음성적 표현을 잘 활용하여 전달하는 것이 교우관계에 영향을 끼치지만, 그 중 자아존중감이 원만한 교우관계에 더 큰 영향력을 보인다. 자아존중감과 자기표현능력 하위변인 중 내용적 요소, 비언어적 요소가 학교수업에 영향을 미쳤고, 자아존중감, 비언어적 요소, 내용적 요소 순으로 영향력을 나타냈다. 즉, 자아존중감이 높고 학생이 표현하고자 하는 내용을 명확하게 비언어적 표현을 활용하여 잘 전달하는 것이 학교수업에 영향을 끼치지만, 그 중 자아존중감이 학교수업 적응에 더 큰 영향력을 나타냈다.

비형식승인 실시간 라돈 측정기의 평가 방법에 대한 연구

오영빈 연세대학교 대학원 2024 국내석사

코로나19 팬데믹이 유행하며 인간은 더 많은 시간을 실내에서 거주하게 되었으며, 이에 따라 인간의 삶의 질에 있어서 실내 공기의 질의 영향력이 더욱 중요하게 여겨지고 있다. 실내 공기의 질을 결정하는 물질은 다양하게 존재하는데, 그중에서도 특히 라돈은 폐암을 유발하는 원인으로써 위험하면서도 노출되기 쉬워 각별한 주의를 통한 제어가 필요하다. 실내 라돈 농도의 측정 및 저감에 있어서 실내 라돈 농도의 변동치를 확인할 수 있는 연속라돈측정기는 특히 그 신뢰성에 대한 평가가 필수불가결하다. 국가에서는 이러한 환경분야 측정기기에 대하여 형식승인 및 정도검사를 통한 법령을 통해 관리를 진행하고 있지만 실시간 라돈 측정기의 경우 형식승인을 받은 측정기의 종류가 많지 않으며 해당 장비들에 대한 교정이 실제로 이루어지기에는 국내 여건 상 시간 및 금전적으로 매우 비효율적인 상황이다. 본 연구에서는 형식승인을 받지 못한 실시간 라돈 측정기의 평가 방법에 대하여 실제 형식승인 및 정도검사 과정을 기반으로 설계하고 통계적 분석 기법 및 이론적 계산값을 통한 검증함으로써 비형식승인 실시간 라돈 측정기에 대하여 신속하고 효율적인 평가를 할 수 있을 것으로 기대된다. With the COVID-19 pandemic in vogue, humans have been living indoors for more time, and accordingly, the influence of indoor air quality on human quality of life is considered more important. There are a variety of substances that determine indoor air quality, especially radon, which is a cause of lung cancer and is dangerous and easy to be exposed, requiring control through special attention. In measuring and reducing indoor radon concentration, an evaluation of its reliability is especially indispensable for continuous radon meters that can check fluctuations in indoor radon concentration. The state manages these environmental measuring devices through formal approval and quality inspection, but in the case of radon measuring devices, there are not many equipment that have received formal approval, and it is very inefficient in terms of time and money due to domestic conditions for the correction of the equipment to be actually carried out. In this study, it is expected to quickly and efficiently evaluate non-certified real-time radon measurement devices by designing the evaluation method of real-time radon measurement devices that have not received formal approval based on actual formal approval and quality inspection processes and verifying them through statistical analysis techniques and theoretical calculations.

Electrochromic properties of hybrid structure with electrospun tungsten oxide nanofibers

오영빈 한양대학교 대학원 2020 국내석사

Tungsten oxide is one of the most promising electrochromic materials due to their excellent electrochromic properties. However, their uncertain durability of amorphous tungsten oxide and poor electrochromic properties of crystalline tungsten oxide remains a constraint on commercialization. In order to solve these problems, the hybrid film in which crystalline and amorphous phase coexist was prepared through electrospinning and sol-gel method. By controlling viscosity of electrospinning, crystalline tungsten oxide nanofibers (WO3 NFs) were successfully prepared. The average diameter of electrospun WO¬3 NFs was measured for about 77 nm. After electrospinning, the WO3 NFs deposited on FTO glass were spin-coated using the peroxotungstic acid (PTA) solution. The prepared hybrid film with thickness of about 235 nm displays complementary electrochromic properties in electrochemical and optical analysis. Compared to amorphous film, the hybrid film exhibited slightly low electrochromic properties of switching speed (9.3 s for coloring and 5.6 s for bleaching), optical modulation (76.7%) and coloration efficiency (57.3 cm2·Q-1). But the evaluated electrochromic properties of the hybrid film are much better than the WO¬3 NFs having poor electrochromic performance. In addition, cycling stability test showed a noticeable improvement (91.1% of initial optical modulation after 1500 cycles). The enhanced cycling stability can be attributed to addition of the WO¬3 NFs, which have a rigid crystal structures that can endure a series of insertion/extraction of Li+ ions. Finally, the hybrid electrochromic device was evaluated to confirm possibility as practical device. The hybrid film prepared by two-step process proposes a feasible solution for electrochromic device having good performance and reliable long-term stability.