상관계수에 대한 검정법 비교

조현주,송명언,정동명,송재기,Cho, Hyun-Joo,Song, Myung-Unn,Jeong, Dong-Myung,Song, Jae-Kee 한국데이터정보과학회 1996 한국데이터정보과학회지 Vol.7 No.2

In this paper, we studied about several methods of testing hypothesis of correlation, specially Approximate method, Empirical method and Bootstrap method. The Approximate method is based on the Fisher's Z-transformation and the Empirical and Bootstrap methods approximate the distribution of the sample correlation coefficient by Monte Carlo simulation and Bootstrap technique, respectively. In order to compare how good these tests are, we computed powers under various alternatives. Consequently, we see that the Approximate test performs very well even if in small sample and all tests have almost the same power in large sample.

고체추진기관의 유동-구조 상호작용 해석에서 Serial Staggered 기법의 수치 안정성

조현주,이지호,이창수,김종암,김신회,이정섭,Cho, Hyun-Joo,Lee, Jee-Ho,Lee, Chang-Soo,Kim, Chong-Am,Kim, Shin-Hoe,Lee, Jeong-Sub 한국전산구조공학회 2016 한국전산구조공학회논문집 Vol.29 No.2

In this paper numerical stability of CSS and ISS schemes in axisymmetric fluid-structure-burning simulation for solid rocket motors are studied. The implemented CSS and ISS algorithms for two-dimensional axisymmetric FSI problems are used to analyze ACM and BCM solid rocket motors. Numerical results from CSS and ISS schemes are compared to investigate the efficacy of ISS scheme over CSS scheme in stabilizing the numerical solution. The ACM and BCM simulation results show that ISS scheme gives stable and converged numerical solutions with appropriately small system time step size, while CSS scheme fails to converge after generating rapidly amplified oscillatory solutions. It is concluded that ISS scheme can be useful in improving the numerical stability of FSI analysis for ACM and BCM solid rocket motor simulations, which is not successfully obtained with CSS scheme.

한약제제 백출(白朮)과 한약재 백출에 대한 HPLC 분석 비교연구

조현주,전윤재,김남길,최혁용,Cho, Hyun Joo,Jeon, Yoon Jae,Kim, Nam-Gil,Choi, Hyug-Yong 대한한의학방제학회 2016 대한한의학 방제학회지 Vol.24 No.2

Objectives : To verify the equivalence between Atractylodis Rhizoma Alba herbal prescription(HP-ARA) and Atractylodis Rhizoma Alba herbal sub stance(HS-ARA). Methods : Safety tests by microbial regulation and heavy metal analysis (total heavy metal, Pb, As) and a stability test by long term shelf test for HP-ARA according to notification of the Ministry of Food and Drug Safety were carried out. Then, multi component profile of HP-ARA and HS -ARA were analyzed by HPLC. Results : The safety and stability of HP-ARA confirmed by several tests. Correlation coefficient of equivalence of HP-ARA and ARA-HS showed 0.992. Conclusion : Based on this result of equivalence between HP-ARA and HS-ARA, HP-ARA can substitute HS-ARA used to make herbal medicines (herbal decoction, pills and powder).

지역 아이덴티티 수립 방안으로서의 경관해석 모델 연구

조현주(Cho Hyun-Joo) 대한인간공학회 2008 대한인간공학회 학술대회논문집 Vol.2008 No.10

사과 알레르기 환자들의 임상적 특성과 원인 알레르겐의 규명

조현주 ( Hyun Joo Cho ),김주희 ( Joo Hee Kim ),최길순 ( Gil Soon Choi ),김정은 ( Jeong Eun Kim ),예영민 ( Young Min Ye ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2010 천식 및 알레르기 Vol.30 No.2

Background: Hypersensitivity to Rosaceae fruits, especially apple, is often associated with birch pollinosis. As the sensitization to pollens has increased, apple allergy is more prevalent. However, the immunologic mechanism has not yet been evaluated in Korean adult patients. Objective: This study was conducted to characterize the clinical features of apple allergy and to identify its IgE- binding components. Method: Ten patients having apple allergy were enrolled. Skin prick tests to common allergens and pollens were performed. Serum specific IgE to apple was measured by ELISA, and IgE-binding components of apple allergen were identified by IgE immunoblot analysis.Result: Most patients showed positive responses to alder/ birch pollens by skin prick tests and high serum levels of specific IgE to apple by ELISA. The IgE-binding component of apple allergen with a molecular weight of 17 kDa was identified by IgE immunoblot in most patients. There was no significant difference in the level of specific IgE to apple between the patient group having oral allergy syndrome and the other group with additional systemic symptoms. Conclusion: We confirmed that apple allergy can develop in pollen-sensitized patients because a 17-kDa allergen is assumed as Mal d 1 which shares a common allergenic determinant with Bet v 1 of birch pollen. (Korean J Asthma Allergy Clin Immunol 2010;30:116-122)

봉침 시술에 의한 혈청병 양상을 나타낸 벌독 알레르기

조현주 ( Hyun Joo Cho ),최길순 ( Gil Soon Choi ),김주희 ( Joo Hee Kim ),성준모 ( Jun Mo Sung ),예영민 ( Young Min Ye ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2010 천식 및 알레르기 Vol.30 No.4

Apitoxin, honeybee venom, is used in alternative medicine as a treatment option for arthritis and chronic pain because it is reported to have an anti-inflammatory property. Hypersensitivity responses to bee venom range from local reaction to life-threatening anaphylaxis, and most of them present in a few hours after exposure to bee venom. Delayed-type allergic reactions have been reported, although unusual, such as serum sickness. We describe a 47-year-old woman who had serum-sickness reaction 7 days after undergoing honeybee acupuncture to relieve her back pain. She complained of maculopapular skin rash, fever, arthralgia and myalgia. High levels of specific IgE and IgG to honeybee venom were observed by immunoCAP. We report herein the first case of serum sickness reaction developed after bee venom acupuncture. (Korean J Asthma Allergy Clin Immunol 2010;30:325-328)

소규모 독립형 태양광 시스템을 위한 에너지저장 방안 연구

조현주(Hyun Joo Cho),스테파니리(Stephanie Lee),매디슨루벨리(Madison Rubeli),앤드류개스퍼(Andrew Gasper),이수진(Sujin Lee),허은녕(Eunyeong Heo) 한국신재생에너지학회 2016 한국신재생에너지학회 학술대회논문집 Vol.2016 No.11

EasyCare

조현주(Hyun Joo Cho),김상철(Sangchul Kim) 한국IT서비스학회 2011 한국IT서비스학회지 Vol.10 No.1

Due to the growth of economy and the advancement of IT, the life expectancy has been prolonged and the interests in health have greatly increased. Recently the request for systems that enable measuring the bio-signals of patients in the non medical organizations. such as home. and transmitting them to medical staffs at remote sites for monitoring them. In this paper, we present an agent-based u-health system for patients or suspects with heart diseases. Our system consists of portable devices for measuring bio-signals and agents that perform data collection, data storage, automatic detection of abnormal status in patients, and HL7-based data exchange in a cooperative way. The main features of the system are : the agent-based architecture facilitates the addition of new service modules as well as the modification of existing ones; an intelligent agent is provided which automatically detects situations in which the bio-signals of patients are abnormal; the medical data standard is supported so that the communication with other systems is very easy. To our survey, there have been few previous systems which support all those features in a seamless way.

한국 공적개발원조의 다자성 양자원조(multi-bilateral assistance)에 관한 탐색적 연구

조현주(Hyun Joo Cho),김은미(Eun Mi Kim),정헌주(Heon Joo Jung) 고려대학교 일민국제관계연구원 2015 국제관계연구 Vol.20 No.2

In recent years, increasing attention is paid to multi-bilateral aid, a hybrid form of multilateral and bilateral aid as multilateral aid is found to be more effective. Many donor countries provide more multi-bilateral aid to recipients because it enables them to exploit multilateral organizations while aid visibility is still maintained. As for South Korea, the share of multi-bilateral aid in bilateral ODA increased to 10.6% in 2013 from 0.3% in 2006. Despite this rapid growth, there have been few works on it. This paper examines the characteristics of South Korea’s multi -bilateral aid. Specifically, t-test analyses are used to see if the patterns of Korea’s multi-bilateral aid allocation vary depending on period, a recipient’s exposure to natural disasters, geographical location, income level, and governance. The result shows that South Korea has substantially increased the share of multi-bilateral aid in total bilateral aid since its admission to OECD Development Assistance Committee. In addition, it finds that significantly higher share of multi-bilateral aid is provided to recipient countries if they are located in Africa, low income countries, and have poor governance. This paper contributes to the growing literature on South Korea’s aid in that its multi-bilateral aid is examined from various perspectives, laying the foundation for future research.

한국 지방정부의 공적개발원조(ODA) 결정요인에 관한 실증 분석: 지방의 세계화 수준을 중심으로

조현주 ( Hyun Joo Cho ),박건우 ( Geon Woo Park ),정헌주 ( Heon Joo Jung ) 한국지방행정연구원 2015 지방행정연구 Vol.29 No.1

The purpose of this study is to empirically analyze the major determinants of Korean local governments`` official development assistance(ODA) allocation. One of the main characteristics of Korea``s ODA is the emergence of new aid-providing agencies and their expanding role. Despite concerns over aid fragmentation, the role of Korea``s local governments in foreign assistance has been steadily increasing. Nevertheless, there have been very few empirical research on local governments`` aid allocation while most works have been rather descriptive and normative. In this regard, this study aims to empirically examine the factors affecting the involvement of local governments in aid activities with a focus on how they respond to globalization and the extent to which the locality is globalized. The result shows that the existence of globalization-related local regulations and the amount of outward foreign direct investment positively influence the size of aid extended by local governments in Korea. Meanwhile, the ratio of foreign residents to the total population in the locality negatively affects the local governments`` contribution to aid programs. This study contributes to the existing literature by examining the determinants of aid activities by local governments and providing a basis for further research.