큰번데기동충하초(Cordyceps militaris)의 혈당강하효과

권영민,조수민,김지헌,이재희,이연아,이승정,이민원,Kwon, Young-Min,Cho, Su-Min,Kim, Jee-Hun,Lee, Jae-Hee,Lee, Yeon-Ah,Lee, Seung-Jung,Lee, Min-Won 한국생약학회 2001 생약학회지 Vol.32 No.4

Cordyceps militaris (CM) has been used as a tonics in the traditional medicine. To investigate the anti-diabetic principle of CM, activity guided fractionation was conducted. Hot water extract of CM was fractionated into 3 parts: above 100,000(A), $100,000{\sim}20,000(B)$, below 20,000(C) in molecular weight using in membrane filter system. All fractions showed mild hypoglycemic activity in streptozotocin (STZ)-induced diabetic rats by oral administration (300 mg/kg). The fraction C which was most active among them was fractionated again into two parts, C-1 and C-2 by Sephadex LH 20 column chromatography. The fraction C-1 showed hypoglycemic activity but C-2 did not show activity compared with control in STZ mice. In glucose-fed hyperglycemic mice, fraction C, C-1 and C-2 also showed significant glucose lowering activity. Their decreasing rates of plasma glucose level after 1 hours administrations of fraction C, C-1 and C-2 were 24.5%, 29.3% and 22.0%, respectively (Tolbutamide: 48.4%). These results suggested that CM has both insulin like and insulin release promoting activity and could be developed as an antidiabetic agent.

애드혹 인지 무선네트워크에서 멀티 홉 전송을 위한 멀티채널할당기법

권영민,박형근,Kwon, Young-Min,Park, Hyung-Kun 한국정보통신학회 2017 한국정보통신학회논문지 Vol.21 No.1

스펙트럼 자원의 부족문제를 해결하고 스펙트럼 자원을 보다 효율적으로 사용하기 위해 인지무선통신기술이 제안되었으며 많은 연구가 이루어지고 있다. 애드혹 인지무선통신에서 멀티 홉 라우팅은 저 전력으로 먼 거리까지 데이터 전송할 수 있는 중요한 기법이다. 멀티채널을 갖는 멀티홉 라우팅에서 전송채널을 선택할 때 우선적으로는 주 사용자에 대한 간섭을 최소화할 수 있는 채널선택이 되어야하며 전송용량을 극대화하기 위해 채널 간 간섭을 최소화할 수 있는 채널선택기법이 필요로 된다. 본 논문에서는 멀티채널 멀티 홉 인지무선네트워크에서에서 채널 간 간섭을 최소화하며 주 사용자와의 충돌을 줄임으로써 용량을 높일 수 있는 채널 스케줄링 방식을 제안하였다. 제안된 방식은 라우팅경로와 채널선택을 동시에 수행한다. 제안된 채널 할당방식에 대한 시뮬레이션을 통해 용량과 충돌률 관점에서 그 성능을 분석하였다. To solve the shortage of radio spectrum and utilize spectrum resource more efficiently, cognitive radio technologies are proposed, and many studies on cognitive radio have been conducted. Multi-hop routing is one of the important technologies to enable the nodes to transmit data further with lower power in ad-hoc cognitive radio networks. In a multi-channel cognitive radio networks, each channel should be allocated to minimize interference to primary users. In the multi-hop routing, channel allocation should consider the inter-channel interference to maximize network throughput. In this paper, we propose multi-channel scheduling scheme which minimizes inter-channel interferences and avoids collision with primary users for the multi-hop multi-channel cognitive radio networks. The proposed scheduling is designed to determine both of routing path and channel selection. The performance of proposed channel allocation scheme is evaluated by the computer simulation in the aspect of capacity and collision rate.

사용자의 공평성과 채널품질을 고려한 분산형 무선인지MAC 프로토콜

권영민,박형근,Kwon, Young-Min,Park, Hyung-Kun 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.1

It is important that using of efficient radio resource because of deficiency spectrum problem, so that related to this problem many researches are have proceeded. To solve this problem, Cognitive Radio(CR) was suggested. The channels are allocated to the secondary users when the primary users don't use the channels, and unfairness of secondary users can be serious problem and channel quality of multichannel can be different due to the different traffic pattern of primary users. In this paper, we propose MAC prtocol both of the user's fairness and channel quality in CR networks. Simulation results show the comparison with CR MAC protocols. 스펙트럼의 자원의 부족으로 인하여 자원을 효율적으로 사용하는 기술이 중요한 기술이 되었고, 이에 따른 연구가 활발히 이루어지고 있다. 스펙트럼 자원을 효율적으로 사용하기 위한 방법으로 인지무선통신이 제안되었으며 부 사용자들은 주 사용자가 채널을 점유하지 않을 때 채널을 할당받게 된다. 따라서 인지무선 네트워크에서 부 사용자들간의 불공평성 문제가 발생할 수 있으며 멀티채널에서 각 채널들은 주 사용자의 트래픽 패턴에서 따라 서로 다른 채널 품질을 갖게 된다. 본 논문에서는 부 사용자간의 공평성을 보장하면서도 가용한 스펙트럼 자원의 채널 품질을 고려한 MAC 프로토콜을 제안하고 시뮬레이션을 통해 제안된 MAC 프로토콜의 성능을 비교 분석하였다.

Risk Assessment for Heavy Metals in Korean Foods and Livestock Foodstuffs

권영민,이경희,이행신,박선오,박정민,김진만,강경모,노기미,김동술,이종옥,홍무기,최달웅,Kwon, Young-Min,Lee, Kyoung-Hee,Lee, Haeng-Shin,Park, Seon-Oh,Park, Jung-Min,Kim, Jin-Man,Kang, Kyung-Mo,No, Ki-Mi,Kim, Dong-Sul,Lee, Jong-Ok,Hong, Moo- Korean Society for Food Science of Animal Resource 2008 한국축산식품학회지 Vol.28 No.3

This study was conducted to evaluate exposure level and risk of heavy metals in livestock foodstuffs and Korean foods. Based on the "Food Intake Data," a part of the 2005 National Health & Nutrition Survey and the "2005 Seasonal Nutrition Survey", 113 Korean foods items were selected. 3 samples from different manufacturers of each 113 items of Korean foods were purchased on summer and fall, so total 678 samples were used. The food groups were classified into 15 categories. For the livestock foodstuffs category, meats and poultry (chicken, pork, pork belly, beef, beef feet soup), milks and dairy products (milk, ice cream, liquid yoghourt, sherbet), eggs (egg) were selected. It was found that the daily amount of heavy metals intake (mg/person/day) from livestock foodstuffs is 0.00020 arsenic, 0.00000 cadmium, 0.00020 lead, and 0.00006 mercury, and the daily amount of heavy metals intake (mg/person/day) from Korean foods is 0.0265 arsenic, 0.0083 cadmium, 0.0067 lead, and 0.0028 mercury. Daily amount of heavy metals intake from livestock foodstuffs was low among the food groups. For risk assessment, PDI (Probable Daily Intake) was calculated and compared with PTWI (Provisional Tolerable Weekly Intake) of JECFA (Joint FAO/WHO Expert Committee on Food Additive). Relative hazard of these livestock foodstuffs was 0.006% in arsenic, 0.000% in cadmium, 0.085% in lead, and 0.149% in mercury. Relative hazard of Korean foods was 0.941% in arsenic, 14.676% in cadmium, 3.319% in lead, and 6.860% in mercury. Thus, livestock foodstuffs and Korean foods were as safe as satisfied with the recommended standards of JECFA.

일제식민지시대의 농민운동과 농민문학론

권영민 ( Young Min Kwon ) 진단학회 1986 진단학보 Vol.- No.62

움직임의 양상에 따른 현대건축의 유형적 분류에 관한 연구

권영민(Kwon. Young-Min),최윤경(Choi. Yoon-Kyung) 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The purpose of this study is to redefine the meaning and to classify the types of movement generated from architectural space proposed by contemporary architects. Movement is an essential part for perceiving space in architecture. Therefore movement has to be understood as an aesthetic factor in analyzing architectural space. This research proposes that movement is classified into 'by experience' and 'by metaphor', and intends to devide contemporary architectures according to the two types of movement. The result of this study is to verity the gravity of movement as a condition for understanding and classifying contemporary architectures.

WTO 분쟁해결의 효율성과 형평성 -강대국의 성과에 대한 비교 검증-

권영민 ( Young Min Kwon ) 한국국제통상학회 2015 국제통상연구 Vol.20 No.1

분쟁해결양해는 GATT가 WTO로 계승되면서 이룬 가장 큰 업적 중 하나로 평가되고 있으며 DDA협상 중단으로 교역장벽 추가완화라는 가장 기초적 목적을 달성하지 못하는 상황에서 분쟁해결제도의 운영은 사실상 현재 WTO의 가장 중요한 역할이다.협정위반에 대해 실질적 해결책을 제시할 수 없었던GATT에 비해WTO 분쟁해결제도는 비교적 신속하고 구속성 있는 판결을 내림으로써 효율성이 증대되었다는 평가를 받는다.그러나 지난 20년 가까운 제도 운영의 결과를 보면분쟁해결을 통한 성과의 격차가 드러난다.효율성은WTO 분쟁해결제도의 목적에 따라 다르게 정의될 수 있으며 분쟁을 제기하는 입장에서는 자신에게 유리한 결정이 내려졌을 때 효율적이라 평가할 수 있다. 따라서 분쟁해결을 통해 얻는 성과에 격차가 있다면 형평성이 개선되었다 말할 수 없을 것이다. 분쟁해결의 성과에 영향을 미치는 요인은 여러 가지 있을 수 있으며 그러한 변수들을 고려하고도 성과차이가 두드러진다면 제도 자체에 힘의 논리가 작용한다는 증거가 될 수 있다. 본논문에서는 로지스틱회귀모형을 통해 분석한 결과 WTO 분쟁해결제도 자체는 공정한 것으로 평가할 수 있으며 특히 개도국의 분쟁해결 효율성을 증대시키기 위해서는 그들의 경제적,사법적 능력을 보완해줄 필요가 있음을 알 수 있다.그러나 그러한 능력이 비슷한 선진국들 사이의 성과격차는 이미 주어진 제도 하에서 자신들에게 유리한 결과를 얻으려는 경쟁의 결과로 보아야 할 것이다.결국WTO협정자체도 선진국 사이의 치열한 경합의 산물이며 그 과정에서 협상을 유리하게 이끌었던 미국의 힘이 많이 반영된 것으로 볼 수 있다. WTO의 양대 세력인 EU는 어느 정도 견제가 가능했겠지만 여타 OECD국은 그렇지 못했을 가능성이 크며 본논문의 분석결과는 그러한 사실을 뒷받침 해주고 있다. Understanding on Rules and Procedures Governing the Settlement of Disputes has been considered to be the most valuable achievement in succession from GATT to WTO regime. With DDA negotiation in suspension, the dispute settlement is in fact the most important role of the WTO these days. Compared to the GATT, where it had been difficult to provide practical solutions to the violation of the provisions, the WTO dispute settlement mechanism, which is designed to give relatively prompt and binding resolutions, has been deemed to be more efficient. However, an efficiency can be defined differently based on various objective of the dispute settlement procedure. For a complainant, it would be efficient only when it achieved its goal of engaging in dispute settlement. That is, the dispute settlement procedure could be viewed efficient for the complaining party when the successful resolution in their perspective is reached. However, with nearly 20 years past, there seemed to be gaps among performance of the dispute settlement among major groups of the WTO members. Of course, there are many factors that could affect the outcome of the dispute settlement procedure. To accommodate such possible control variables, this paper used a basic logistic regression model and tested whether the differences in successful outcome ratio were due from power disparity among member groups. For the developingcountries, it is mainly because of their lack of economic and litigatory abilities. For developed countries with relatively equivalent capacities, however, unequal performances among them should be considered to be outcomes of power struggle in making as well as interpreting rules for their own favor. WTO itself is a product of fierce competitions among participants and, as the U.S. has been a leading power in the process, it may contain many provisions advantageous to them. While EU, as another leading power, could have countered such advantages, other OECD countries may not be successful in doing so. The empirical result from this paper may shed lights on such a possible explanation to the dispute settlement performance gaps so far.

부모 양육행동 척도 개발과 타당도 연구

권영민(Kwon, Young-Min),서경선(Seo, Kyeong-Seon) 한국아동심리치료학회 2018 한국아동심리치료학회지 Vol.13 No.2

The purpose of this study is to develop a Parenting Behavior Scale and to verify its reliability and validity. Altogether, seven types of parenting behaviors were extracted and 70 preliminary items were administered to 453 mothers and 52 fathers raising children ranging from 5 to 16 years old. 40 final items were selected. The results are summarized as follows. First, the results of the factor analysis for the 40 items showed 8 factors accounting for 58.17% of the total variances. Each of the 8 factors was correlated with positive parenting behaviors such as receptive discipline, warmth and support, respect as well as with negative parenting behaviors such as criticism and aggression, inappropriate role modeling, inconsistency, interference and neglect. Second, the reliability of the 8 factors ranged from .69 ~ .88. Third, the relationship between parenting behavior and parenting efficacy was examined with the results showing that positive behaviors along the parenting behavior scale were correlated with parenting efficacy while negative behaviors were seen to have an adverse effect on parenting efficacy. Fourth, cross-validation of parenting behaviors was verified with a reasonable level of reliability. In the conclusion, the implications and limitations of this study are discussed.

다중 조화 입력의 개별 블레이드 피치 제어 기법을 이용한 Lift-offset 복합형 헬리콥터 로터 진동 감소

권영민(Young-Min Kwon),홍성부(Sung-Boo Hong),박재상(Jae-Sang Park),위성용(Seong-Yong Wie),강희정(Hee Jung Kang),김도형(Do-Hyung Kim) 한국항공우주학회 2020 한국항공우주학회 학술발표회 논문집 Vol.2020 No.11

인적자원의 증가와 경제성장: 신성장 이론에 의한 접근

권영민 ( Young Min Kwon ) 한국경제학회 2002 經濟學硏究 Vol.50 No.3

This article deals with growth effects of changes in labor endowments. In a model of technology trade between North and South, it is shown that an increase in skilled labor in either North or South increases the world growth rate. While increases in northern unskilled labor have negative growth effects, increases in southern unskilled labor can have positive growth effects under certain conditions. These results are different from Grossman and Helpman(199) and Lai(1995), in which technology diffusion occurs through imitation. They are also different from Liu(1994)`s model of technology trade, where only one type of labor is considered.