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Comparison of symmetric and asymmetric routing for fixed two-hop cellular relaying network
Eunhyun Kwon,Jaiyong Lee,Mi-Sun Do,Kyunghun Jung IEEE 2007 IEEE communications letters Vol.11 No.5
<P>In this paper, routing strategies for fixed two-hop cellular relaying networks are discussed in terms of area spectral efficiency. We consider symmetric and asymmetric routing in uplink and downlink. Simulation results show that relaying increases the average throughput in comparison with conventional cellular networks and the area spectral efficiency of asymmetric routing is slightly better than that of the symmetric</P>
Choi, Eunhyun,Lee, Chulho,Cho, Misun,Seo, Jeong Jea,Yang, Jee Sun,Oh, Soo Jin,Lee, Kiho,Park, Song-Kyu,Kim, Hwan Mook,Kwon, Ho Jeong,Han, Gyoonhee American Chemical Society 2012 Journal of medicinal chemistry Vol.55 No.23
<P>Hydroxamate-based HDAC inhibitors have promising anticancer activities but metabolic instability and poor pharmacokinetics leading to poor in vivo results. QSAR and PK studies of HDAC inhibitors showed that a γ-lactam core and a modified cap group, including halo, alkyl, and alkoxy groups with various carbon chain linkers, improved HDAC inhibition and metabolic stability. The biological properties of the γ-lactam HDAC inhibitors were evaluated; the compound designated <B>8f</B> had potent anticancer activity and high oral bioavailability.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jmcmar/2012/jmcmar.2012.55.issue-23/jm3009376/production/images/medium/jm-2012-009376_0004.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jm3009376'>ACS Electronic Supporting Info</A></P>
리더십 프로그램이 저소득층 아동의 리더십 역량에 미치는 효과
권진하 ( Jinha Kwon ),김은현 ( Eunhyun Kim ) 대한가정학회 2017 Human Ecology Research(HER) Vol.55 No.1
This study investigates the effect of a leadership program to enhance leadership skills in children from low-income families. A total of 45 elementary school students participated in the 52-week leadership program. Five leadership scales, such as goal attainment, paradigm shifting skills, skills to lead others, human relationship skills, and sense of purpose, were measured through survey questionnaires before and after implementing the program. In addition, individual teacher interviews examined the influence of the program on students` leadership skills. This study found that participants showed significant improvement after implementing the program in the three domains of the leadership skills (goal attainment, paradigm shifting skills, and human relationship skills); however, the skills to lead others and sense of purpose did not significantly change. The leadership teachers also stated that the program influenced positively on students` leadership skills; in addition, students` behavioral changes were found by developing relationships with other children as well as contemplating and attempting to find a future dream and vision. The leadership program was effective to enhance leadership skills in children from low-income families. This study can provide the theoretical and practical foundations for the development and implementation of effective leadership programs that meet the needs of children from low-income families.
Performance evaluation using reduced neighbor lists in cellular based multi-hop relay network
Hun-je Yeon,Eunhyun Kwon,Sung-gook Lim,Jaiyong Lee,Mi-Sun Do,Rakesh Taori 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
In this paper, we introduce neighbor list composition scheme that organizes small numbers of adjacent neighbors for cellular based multi-hop relay network so that the neighbor advertisement with small number of neighbors could increase average transmission rate of MR network. Wireless multi-hop environment based on cellular system, such as 802.16j, requires an algorithm that organizes neighbor lists dynamically due to the mobility and impermanancy of relay station. From the study, we’ve concluded that the location based neighbor lists composition could reduces the wastage of wireless resources, which improves the transmission rate of cellular based wireless multi-hop network.
무선통신 시스템에서의 비례지연서비스를 위한 플로우 기반 WTP 스케쥴러
박효순,권은현,김태현,이재용,Park Hyosoon,Kwon Eunhyun,Kim Taehyoun,Lee Jaiyong 한국통신학회 2005 韓國通信學會論文誌 Vol.30 No.7B
본 논문에서는 무선 통신시스템에서 클래스간 비례지연 서비스를 위한 Flow Based Waiting Time Priority (FB-WTP) 스케쥴러를 제안한다. 기존의 스케쥴러는 클래스 단위로 동작하는 유선망의 구조를 그대로 사용하나, 제안된 FB-WTP 스제쥴러는 이와 달리 플로우 단위로 동작을 하며, 네트웍크 운영자가 입력한 클래스간 목표 큐잉 지연 비율은 기존 알고리즘과 같이 거의 동일하게 만족 시키면서도 클래스별 평균 큐잉 지연 성능은 월등히 향상 되었다. 이것은 각 플로우의 채널 환경이 동적으로 변화는 무선 환경에서 FB-WTP는 다중 플로우 다이버시티 효과를 최대한 이용 하기 때문이다. 또한 기존 알고리즘들에서 발생 할 수 있는 HOL 패킷 블록킹 문제가 발생하지 않는다. 성능평가를 위한 모의 실험에서 다중 채널 상태를 고려한 Look-ahead Waiting Time Priority (LWTP) 스케줄링 알고리즘과의 비교 분석으로 제안한 FB-WTP가 클래스간 목표 큐잉 지연 비율을 만족 시킬뿐만 아니라 LWTP에 비해 클래스별 평균 큐잉 지연 특성이 향상됨을 보였다. In this paper, we propose a Flow Based Waiting Time Priority (FB-WTP) scheduler that supports the proportional delay differentiated services between classes. Existing scheduling algorithms utilize the configuration of scheduler, which is operated as class unit, applied to wired network. However, FB-WTP scheduler is operated as flow unit and can take advantage of multi-flow diversity effect in time-varying channel state environment. As a result, FB-WTP improves the average queueing delay on each class as well as supporting the average queueing delay ratio between classes. It also solves the HOL packet blocking problem implicitly. Simulation results show that FB-WTP scheduler has better system queueing delay performance than Look-ahead Waiting Time Priority (LWTP) scheduler and supports the larger queueing delay ratio between classes that network operator set.
MICRORNA-365 INHIBITS THE PROLIFERATION OF VASCULAR SMOOTH MUSCLE CELLS BY TARGETING CYCLIN D1
Kim, Myung-Hyun,Ham, Onju,Lee, Se-Yeon,Choi, Eunmi,Lee, Chang Yeon,Park, Jun-Hee,Lee, Jiyun,Seo, Hyang-Hee,Seung, Minji,Choi, Eunhyun,Min, Pil-Ki,Hwang, Ki-Chul,Kwon, Hyuck Moon Elsevier 2014 JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY - Vol.63 No.12