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다발성골수종 환자에서 B형간염에 면역이 있는 공여자로부터 동종조혈모세포 이식 후 발생한 B형간염의 역혈청전환 1예
권보란,목정하,배정호,설희윤,설영미,송무곤,최영진,신호진,정주섭,조군제 대한혈액학회 2008 Blood Research Vol.43 No.2
A 52-yr-old male with multiple myeloma underwent autologous stem cell transplantation in June 2002. In August 2004, the multiple myeloma had recurred. The patient received allogenic stem cell transplantation in September 2005. Before undergoing transplantation, the presence of HBsAb and the absence of HBsAg were noted. The patient underwent allogenic peripheral blood stem cell transplantation (PBSCT) from a sibling donor who was hepatitis surface antibody (HBsAb) positive and hepatitis surface antigen (HBsAg) negative. Nineteen months after the PBSCT, the liver function tests showed elevation of the aminotransferases. The patient was HBsAg positive and HBsAb negative. The liver biopsy specimen revealed hepatitis. The reactivation of a hepatitis B virus infection, in a hepatitisB immune patient, referred to as reverse seroconversion, is a rare complication of hematopoietic stem cell transplantation.
음악 고고학계의 최근 연구 동향 I: 유럽연합 음악고고학 프로젝트(EMAP)의 활동을 중심으로
권보나 ( Bona Kwon ) 세계음악학회 2021 음악과 문화 Vol.- No.44
This article reports recent research of European Music Archaeology Project. The philosophical aim of the project is a peaceful coexistence in European Union, it mainly explores the roots of ancient European music as a represent of European civilization and their soul. The vision of this project is based on an agile and closed network with all of European countries and cultural units, moreover excavate and restore ancient European music repertoire plan a wide variety of musical performances in different contexts, cooperate with a cutting edge IT technology in order to transfer the original soundscape flamboyantly. EMAP is working with professionals in various field of study to support each project. They are musicologist for deciphering the ancient score, ancient instrument specialists for music performance, artisans for production of ancient music instrument who are well trained in traditional artisanship and so forth. Especially, media artists and sound designers for the audience’s new experience in new generation endorse a new virtue of the ancient music culture. Furthermore, the specialist can show their fruit with the rebirth of ancient music in many chances such as local music festivals, not only music in a certain cultural context but also in contemporary music festivals and in regions which Muslim cultural legacy have. For civil education and communication with different generations, they put their enormous effort on book publication and various media release project. These educational materials for new generation spread the essence of European culture and the importance of their unity for peaceful sustainability.
광릉숲, 태화산, 가리왕산 활엽수림에서 낙엽에 의한 수종별 엽면적지수 추정
권보람 ( Boram Kwon ),전지현 ( Jihyeon Jeon ),김현석 ( Hyun Seok Kim ),이명종 ( Myong Jong Yi ) 한국농림기상학회 2016 한국농림기상학회지 Vol.18 No.1
광릉숲, 태화산 서울대 학술림, 가리왕산의 낙엽활 엽수림에서 연간 낙엽·낙지 생산량과 가을철 낙엽에 의한 수종별 엽면적지수를 산출하고, 간접적인 방법의 것과 비교하였다. 연간 낙엽·낙지 생산량은 천이 단계 증가에 따른 임분의 바이오매스 축적량이나 수종 구성 등에 따라 그 양과 비율이 다르게 나타났으며(Table 2), 특히 수종마다 낙엽의 양에 차이는 있지만 모든 임분에서 여름철 이후에 집중되는 경향을 보여(Fig. 1), 가을철의 한시적인 낙엽 수집만으로도 최대엽면적지수의 추정은 유효한 것으로 나타났다. 더욱이, 이러한 낙엽의 수집으로 낙엽의 양 뿐만 아니라 수종마다 SLA와 탈락시기를 정확하게 추정할 수 있었고 (Table 3), 간접방법으로는 불가능하기 때문에 국내에서는 시도되지 않았던 각 수종별 엽면적지수를 국내 최초로 산출 할 수 있었다(Fig. 2). 본 연구를 통하여 수종별 낙엽량과 엽면적지수는 각 수종의 흉고단면적과 유의한 상관관계를 보였으나, 간접방법에 의한 전체 엽면 적지수를 흉고단면적의 비율을 곱하여 수종별 엽면적지수로 추정하는 것은 상당한 오차가 발생할 수 있음을 알 수 있었다(Fig. 3). 또한 간접방법에 의한 엽면적지수는 잎의 양이 늘고 밀집도가 높아질수록 과소평가되는 오류가 발생하기 쉽기 때문에(Fig. 4, 5), 직접방법에 의한 엽면적지수와의 평가는 필수적임을 확인할 수 있었다. 따라서, 낙엽에 의한 직접적인 엽면적지수의 측정을 시도함으로써 다양한 수종이 공존하는 우리나라 온대 활엽수림에서 임분의 수종 구성과 밀도, 천이단계, 입지환경 등에 따른 낙엽량과 수종별 엽면적지수의 변화 양상을 정량적으로 확인 할 수 있었다. Annual litterfall production and leaf area index (LAI, m2/m2) were estimated using litter traps in Gwangneung, Mt. Taewha and Mt. Gariwang. Annual total litter fall production including branch, bark, others was the highest in Gwangneung(7497.3±326.5 kg/ha/yr), which had the highest basal area at late successional stage, and followed by Mt. Taewha(5929.1±225.8 kg/ha/yr) and Mt. Gariwang(3,210.1±220.1 kg/ha/yr). Mt. Gariwang had the lowest litterfall production due to high elevation and short growing season even with the higher stand density and basal area than Mt. Taewha. Similarly, LAI, which was calculated by multiplying the mass of leaf litter with specific leaf area, was the highest in Gwangneung(5.99±0.69) and followed by Mt. Taewha(5.20±0.24) and Mt. Gariwang(4.06±0.42) and the upper canopy species had the highest leaf area index in every sites (Gwangneung : 4.72, Mt. Taewha : 3.08, Mt. Gariwang : 2.19). However, species specific LAI estimation based on the relationship between basal area and leaf area was limited due to upper canopy species non-proportionality of basal area with LAI. In addition, the comparison between direct and indirect LAI measurement showed the importance of canopy clumping, especially at high density. Our study emphasized the necessity of direct LAI measurement using litter fall traps especially at temperate deciduous forest with diverse species.
권보람,김주성,Kwon, B.R.,Kim, J.S. 한국전자통신연구원 2013 전자통신동향분석 Vol.28 No.5
최근 전 세계적으로 대중으로부터 십시일반 자금을 모으는 크라우드펀딩이 주목받고 있다. 특정한 프로젝트를 위해 다수의 개인들이 소액으로 후원을 하는 크라우드펀딩은 기존의 방식으로는 자금조달에 한계가 있는 다양한 분야와 목적의 자금 지원을 가능하게 하는데 그 의의가 있다. 특히 지분투자형 크라우드펀딩은 창의적인 아이디어나 기술을 가진 초기 단계의 스타트업과 창업자에게 새로운 자금조달 방식으로써 큰 기회가 되고 있다. 이에 따라 본고에서는 크라우드펀딩의 개념 및 특징과 국내 외 크라우드펀딩의 현황을 살펴보고자 한다. 특히 지분투자형 크라우드펀딩을 둘러싼 크라우드펀딩 사례, 입법 현황 및 법률적 쟁점을 파악하고 이를 바탕으로 향후 창업 촉진을 위한 정책적 시사점을 제시하고자 한다.
Identifying Factors Affecting Behavioral Intent of Potential and Existing N-screen Service Users
권보람,류성한,김영걸 한국전자통신연구원 2015 ETRI Journal Vol.37 No.2
With recent advances in media technology, the creation of a relatively new service, N-screen, has been realized. N-screen provides seamless connections among various media and enables users to enjoy entertainment content at any time and any location. With such recent advances comes opportunity; therefore, for those N-screen service providers who have established an early edge in the ICT industry, it is imperative that they maintain this and stay ahead of the ensuing competition. In this context, the objective of this study is two-fold; first, we aim to find factors influencing the behavior of existing and potential N-screen service users, and then second, to examine the differences in how these factors operate within the two user types. The results of this study show that the perceived value and subjective norm are important influencers in both user types. However, price fairness and innovativeness are only influential on the attitude and intention of potential users, while some aspects of media usage have only significant influences on the behavior and loyalty of existing users. Based on these results, we provide some implications for both researchers and practitioners who wish to better understand the nature of N-screen users.