대용량 입자 발생 장치 개발 및 이를 이용한 항바이러스 공조용 공기필터 제조

박대훈,조윤행,황정호,Park, Dae Hoon,Joe, Yun Haeng,Hwang, Jungho 한국입자에어로졸학회 2016 Particle and Aerosol Research Vol.12 No.4

Since airborne viruses have been known to aggravate indoor air quality, studies on development of anti-viral air filter increase recently. In this study, a mass aerosol particle generator for coating a commercial air filter (over $300{\times}300mm^2$) was built, and evaluated by comparing a commercial particle generator. Then, via this device, a commercial air filter was coated with anti-viral material ($SiO_2-Ag$ nanoparticles in this study), so fabrication of commercial anti-viral air filter was performed and the pressure drop, filtration efficiency, and anti-viral ability of the filter were evaluated against aerosolized bacteriophage MS2 in a continuous air flow condition. The result showed that the particle generation of the new generator was more than about 8.5 times over which of the commercial one. Consequently, $SiO_2-Ag$ particle coating on a filter does not have significant effects on the filtration efficiency and pressure drop with different areas, and the average anti-viral efficiency of the $SiO_2-Ag$ filter was about 92% when the coating areal density was $1.0{\times}10^{12}particles/m^2$.

카리브해 국가에서 확산되는 플라스틱 프리 운동

박대훈,Park, Dae-Hun (사)한국포장협회 2019 包裝界 Vol.319 No.-

글로벌 금융위기 이후 중국 경제외교의 변화 및 전략적 함의

박대훈(Dae Hoon PARK),신종호(Jong Ho SHIN) 성신여자대학교 동아시아연구소 2012 국가와 정치 Vol.18 No.-

중국의 경제외교는 1990년대 이후 국가이익의 우선 순위에 대한 인식변화, 외교정책에 있어서 경제적 요인의 중요성 증대, 급속한 세계화에 따른 국가간 상호의존의 증대에 따라 본격화되었다. 중국 경제외교는 1997년 동아시아 금융위기, 2001년 WTO 가입 등을 거치면서 기존의 양자간 외교형태에서 국제기구 참여를 포함한 다자외교의 형태로 발전하게 되었다. 그러나 2008년 서브프라임 모기지 사태를 계기로 발생한 미국발 금융위기는 기존 중국 경제외교에 새로운 전략적 도전과 기회를 동시에 가져왔다. 글로벌금융위기 이후 중국의 경제외교는 기존의 소극적이고 국제체제 순응적인 경제외교 형태에서 적극적이고 복합적이며 창설주도형인 경제외교로 변화하였다. 이 과정에서 중국의 경제외교는 치앙마이이니셔티브(CMIM), BRICs, G20과 같은 다자무대를 활용하는 경제외교를 수행함으로써, 과거 G7과 IMF 등으로 대표되는 국제경제질서를 개혁하고, 글로벌 위기에 대한 국제사회의 책임대국으로서의 역할을 수행했으며, 신흥국가를 대표하여 새로운 글로벌 경제거버넌스를 제안함으로써 자국의 국제적 위상에 부합하는 영향력을 본격적으로 행사하고자 하였다. 이와 같이 글로벌 금융위기 이후 다자외교를 중심으로 전개되어 온 중국의 경제외교는 개혁개방 이후 지속되어 온 ‘하나의 중심, 두 개의 기본점’이라는 전략적 목표의 구체적인 실천도구이자, 중국외교의 목표인 21세기 강대국화를 실천하기 위한 가장 효과적인 전략수단이다. 또한 중국의 경제외교는 글로벌·지역차원에서 ‘중국의 부상’에 따른 우려를 불식시키고 평화적인 발전을 구체화하며, 새로운 글로벌 거버넌스 구축과 국제질서 개혁의 유효수단이라는 전략적 함의를 가진다. China’s economic diplomacy has become more serious after the end of the Cold War in the 1990s because of the increase in necessity for Chinese economy’s globalization, continuous development of the national economy, formation of peaceful domestic and foreign environment, and the economic cooperation and mediation due to the intensification of international interdependence. And with experiencing East Asian Financial Crisis in 1997 and enrollment in WTO in 2001, China’s economic diplomacy converted into multilateral diplomacy including active participation in international organizations from original passive, bilateral diplomatic form. Also, the global financial crisis that occurred due to the U.S.’s Subprime Mortgage Situation in 2008 brought new strategic challenges and opportunities to China’s established economic diplomacy. With the global financial crisis, China turned its economic diplomacy from passive and ‘adaptive-to-international-system’ economic diplomacy into more of an active, complex, and establishment-driven economic diplomacy. In this process, China improved its image through reforming the international economic order that used to be represented with G7 and IMF and playing its role as ‘Responsible Power State’ of the international society dealing with the global crisis. In other words, in appreciation of the global financial crisis, China has become capable of suggesting new global economic governance and practicing leverage that is suitable to their substance, let alone its original responsibility of constructing peaceful domestic and foreign environment for international mutual cooperation and economic development. As shown above, China’s diversified economic diplomacy focusing on international organizations is a realistic decision for maintaining the strategic goal of ‘one central task, two basic points’ a tool that materializes peaceful expansion of power on both the global and local level, and a core function of diplomacy for the realization of becoming the great power of the 21st Century.

감정지능이 갈등전이에 미치는 영향: 판매원을 중심으로

박대훈 ( Dae Hun Park ),이준호 ( Jun Ho Lee ) 단국대학교 분쟁해결연구센터 2015 분쟁해결연구 Vol.13 No.2

The effects of task conflict and relationship conflict within an organization have been verified individually. The results indicated that while relationship conflict mostly leads to negative outcomes, the effects of task conflict are mixed. As such, an approach to explaining the mixed effects of task conflict has been adopted through which the concept of conflict transference from task conflict to relationship conflict, by which task conflict affects relationship conflict, has been raised. Unlike expectations of positive effects, task conflict has negative effects arguably because of its transference to relationship conflict. This study has verified whether conflict transference within an organization actually occurs in the context of emotional labor. The study analyzed answers from a survey of 180 salespersons working in department stores and confirmed that task conflict has significant positive effects on relationship conflict. Also, as a mechanism to weaken conflict transference, this study has tested the negative moderating effects of emotional intelligence. Emotional labor required for jobs that involve direct contact with the customer is in itself negative. And relationship conflict that emerges through conflict transference within the organization a person belongs to can aggravate the negative effects. In that sense, the findings that emotional intelligence diminishes conflict transference bear significance. Based on these findings, the study has suggested implications, limitations, and directions for future research.

감정노동이 종업원 심리적 웰빙에 미치는 영향: 상사 신뢰성의 조절효과를 중심으로

박대훈(Park, Dae-Hun),장영철(Chang, Young-Chul),김진욱(Kim, Jin-Wook) 글로벌경영학회 2015 글로벌경영학회지 Vol.12 No.3

This study examines the impact of emotional labor on the psychological well-being of employees and the moderating effect of supervisor trustworthiness. Morris and Feldman(1996) defined emotional labor as the effort, planning, and control needed to express organizationally-desired emotion during interpersonal transactions. In other words, emotional labor means the expression of emotion desired by the organization. This study tested the effect of the subcategories of emotional labor(frequency of emotional display, attentiveness of emotional display, mismatch of emotions) on psychological well-being, and found that the independent variables of psychological well-being, such as the frequency of emotional display and mismatch of emotions, affect dependent variables. The results of the analysis shows that the frequency of emotional display is tied negatively to self-acceptance and reliance, whereas the mismatch of emotions is tied positively to self-acceptance and reliance. The frequency of emotional display has a positive effect on environmental mastery and isolation whereas the mismatch of emotions has a negative effect on environmental mastery and isolation. A moderation analysis reveals that the degree of trust that one feels with supervisors affects the dimensions of psychological well-being; environmental mastery and reliance. This suggests that when organizational members have a higher level of interactions with customers, feel mismatch of emotions and less happy psychologically, their trust to supervisors helps mitigate unfortunate situations. Therefore supervisors with ability, benevolence and integrity can help employees overcome emotional labor issues and feel happiness at work. Moreover supervisor trustworthiness has a greater moderating effect on burnout than psychological wellbeing: Benevolence and integrity, which are sub-elements of supervisor trustworthiness, reduce employees’ emotional exhaustion caused by emotional labor, enhance the sense of respect they feel, and limit the diminished sense of personal accomplishment or increase the sense of personal accomplishment for them.

마이크로 어레이 데이터에 적용된 2단계 K-means 클러스터링의 소개

박대훈(Daehoon Park),김연태(Yountae Kim),김성신(Sungshin Kim),이춘환(Choon-Hwan Lee) 한국지능시스템학회 2007 한국지능시스템학회논문지 Vol.17 No.2

많은 유전자 정보와 그 부산물은 많은 방법을 통해 연구되어 왔다. DNA 마이크로어레이 기술의 사용은 많은 데이터를 가져왔으며, 이렇게 얻은 데이터는 기존의 연구 방법으로는 분석하기 힘들다. 본 눈문에서는 많은 양의 데이터를 처리할 수 있게 하기 위하여 K-means 클러스터링 알고리즘을 이용한 분할 클러스터링을 제안하였다. 제안한 방법을 쌀 유전자로부터 나온 마이크로어레이 데이터에 적용함으로써 제안된 클러스터링 방법의 유용성을 검증하였으며, 기존의 K-means 클러 스터링 알고리즘을 적용한 결과와 비교함으로써 제안된 알고리즘의 우수성을 확인할 수 있었다. Long gene sequences and their products have been studied by many methods. The use of DNA(Deoxyribonucleic acid) microarray technology has resulted in an enormous amount of data, which has been difficult to analyze using typical research methods. This paper proposes that mass data be analyzed using division clustering with the K-means clustering algorithm. To demonstrate the superiority of the proposed method, it was used to analyze the microarray data from rice DNA. The results were compared to those of the existing K-meansmethod establishing that the proposed method is more useful in spite of the effective reduction of performance time.

패널 케이싱의 두께에 따른 투과 손실 해석

박대훈(D.H. Park),박성규(S. K. Park),신유인(Y. I. Shin),송철기(C. K. Song) 한국정밀공학회 2015 한국정밀공학회 학술발표대회 논문집 Vol.2015 No.12월

중형 항공기 스트링거의 성형 프레스

박대훈(D. H. Park),박성남(S. N. Park),최달예(D. Y. Choi),송철기(C. K. Song) 한국정밀공학회 2017 한국정밀공학회 학술발표대회 논문집 Vol.2017 No.5월

The Noise Reduction Effect by the Enclosure of Gas Turbines

박대훈(Dae Hun Park),신유인(Yoo In Shin),박성규(Sung Gyu Park),김강일(Kang Il Kim),송철기(Chul Ki Song) Korean Society for Precision Engineering 2017 한국정밀공학회지 Vol.34 No.4

비디오 스트리밍 데이타 전송시 RTCP를 이용한 효율적인 네트워크 트래픽 제어

박대훈(Dae-Hoon Park),허혜선(Hye-Sun Hur),홍윤식(Youn-Sik Hong) 한국정보과학회 2002 정보과학회 컴퓨팅의 실제 논문지 Vol.8 No.3

네트워크 상에서 비디오 스트리밍 데이타를 전송할 때에는 다른 어플리케이션에 비해 훨씬 큰 대역폭을 차지하게 되며, 이에 따라 같은 네트워크를 사용하는 다른 어플리케이션과의 충돌로 과부하가 발생하게 된다. 본 논문에서는 이러한 문제점을 해결하기 위해 RTP와 RTCP를 이용한 스트리밍 데이타 전송 방식을 채택하였다. 즉, RTCP의 RR(Receiver Report) 패킷을 수신하여 네트워크 트래픽 발생 여부를 실시간으로 조사한다. 트래픽 발생 여부에 따라 JMF에서 사용하는 RTP 인코딩 방식 중 하나인 Motion JPEG의 양자화 계수를 동적으로 조절함으로써 전체 네트워크 트래픽을 줄이고자 시도하였다. 전체 전송량 평균과 세션별 전송량 평균 비율이 5% 범위를 넘어설 때, 각 세션별 전송량을 세션 평균값에 가깝게 동적으로 조절한 결과 과부하가 줄어들 뿐만 아니라 전체적인 전송 효율도 개선됨을 확인할 수 있었다. When we want to transfer video streaming data through computer networks, we will have to be allocated a larger bandwidth compared to a general application. In general, it causes a serious network overload inevitably due to the limited bandwidth. In this paper, in order to resolve the problem, we have taken a method for transmitting video streaming data using RTP and RTCP. With RR(Receiver Report) packet in RTCP we will test it to check whether the traffic in a network has occurred or not. If it happened, we have tried to reduce the overall network traffic by dynamically changing the quantization factor of the Motion JPEG that is one of the encoding styles in JMF. When the ratio of the average of transmission for each session to the average of overall transmission is greater than 5%, we should adjust the amount of data to be transmitted for each session to reach the session mean values. The experimental results show that the proposed method taken here reduces the overload effectively and therefore improves the efficiency for transmitting video streaming data.