멸종위기 야생생물 I 급 털복주머니란 서식지 복원을 위한 서식지 적합성 지수(HSI) 개발

윤영준,김선령,장래하,한승현,이동진,심윤진,박용수,Yoon, Young-Jun,Kim, Sun-Ryoung,Jang, Rae-Ha,Han, Seung-Hyun,Lee, Dong-Jin,Shim, Yun-Jin,Park, Yong-Su 한국환경복원기술학회 2020 한국환경복원기술학회지 Vol.23 No.4

This study aimed to develop the HSI (Habitat Suitability Index) model of Cypripedium guttatum. and to verify this model by applying to the candidate sites for replacement habitat. The development of HSI and SI (Suitability Index) model was conducted based on the existing literature, field surveys, and expert opinions for information on ecological habitat characteristics. Seven variables were selected as habitat variables including mean maximum temperature in Jul.-Aug., lighting, slope, altitude, effective soil depth, soil texture, and artificial overexploitation (i.e. protected areas). HSI model was developed for C. guttaum based on these variables. This HSI model showed high applicability to selection and evaluation of replacement habitats for C. guttaum. Our findings could provide the basic information on habitat assessment to prevent the extinction of endangered C. guttatum. However, since there is a limitation that the survey data were insufficient, further field surveys should be conducted on several habitat types to improve the accuracy of the HSI model.

항MRSA 활성을 보이는 Paenibacillus incheonensis YK5의 분리 및 특성

윤영준,김혜영,이태수,김정완,Yoon, Young-Jun,Kim, Hye-Yoong,Lee, Tae-Soo,Kim, Jung-Wan 한국미생물학회 2008 미생물학회지 Vol.44 No.4

국내 토양으로부터 MRSA에 대해 항균활성을 보이는 세균들을 분리하였다. 이들 가운데 가장 높은 항MRSA 균 활성을 보인 YK5 균주는 호기성 간균으로 운동성이 있고, 내생포자를 형성하였으며, 인돌을 형성하지 않았고, mannitol을 분해하여 산을 생성시키지 않았다. 이 균주의 16S rRNA 유전자 염기서열은 Paenibacillus 속 세균들의 유전자와 $95{\sim}98%$의 상동성을 나타냈는데 특히 P. elgii와 가장 높은 상동성을 보였으나, 기타 생리 생화학적 특성에서 다른 점들이 관찰되어 P. incheonensis YK5로 명명되었다. P. incheonensis YK5 를 SST 배지에 접종하여 $37^{\circ}C$에서 96 시간 배양한 다음 그 상등액으로 부터 부탄올로 추출된 항균물질은 그람 양성균인 MRSA 20 균주들과 Streptococcus pneumoniae, 그람 음성균인 Pseudomonas aeruginosa 10균주들, Salmonella spp., Shigella spp., Escherichia coli와 Klebsiella pneumoniae 및 인체병원성 진균인 Cryptococcus neoformans와 Trichophyton spp.에 대하여 광범위한 항균효과를 나타냈다. 또한 이 항균물질은 $20{\sim}100^{\circ}C$ 사이의 온도구간에서 안정한 활성을 유지하였을 뿐만 아니라, pH $3.0{\sim}7.0$의 넓은 pH범위에서 활성을 나타내 MRSA를 비롯한 다양한 병원균에 대한 항생물질로서의 가능성을 보였다. Various bacteria were isolated from Korean soil samples based on their capability inhibiting the growth of MRSA strains. Among them, strain YK5 with the highest activity was a Gram positive sporulative bacillus with motility. It did not produce indole and no acid was formed from mannitol by the bacterium. The 16S rRNA sequence of the strain showed $95{\sim}98%$ homology with those of Paenibacillus spp.. The bacterial isolate shared the highest homology with that of P. elgii (98%), but was named as Paenibacillus incheonensis YK5 due to differences in physiological properties. Butanol extract of the P. incheonensis YK5 culture grown in SST medium at $37^{\circ}C$ for 96 hr showed a broad antimicrobial activity against Gram-positive (MRSA and Streptococcus pneumoniae) and negative (Pseudomonas aeruginosa, Salmonella spp., Shigella spp., Escherichia coli, Klebsiella pneumoniae) pathogenic bacteria and fungi (Cryptococcus neoformans and Trichophyton). The antimicrobial activity in the crude extract was stable in a broad range of temperature and pH, $20{\sim}100^{\circ}C$ and $3.0{\sim}6.0$, respectively. Therefore, the antimicrobial activity of P. incheonesis YK5 had potential as a novel antibiotics for pathogens including MRSA.

압력에 따른 맥파의 푸리에 분석

윤영준,이명화,신학수,정현민,조정현,소광섭,Yoon Young-Jun,Lee Myeong-Hwa,Shin Hak-Soo,Johng Hyun-Min,Cho Johng-Hyun,Soh Kwang-Sup 대한예방한의학회 1999 대한예방한의학회지 Vol.3 No.1

압력을 증가시켜가며 맥파를 측정하여 맥파의 진동수와 푸리에 진폭이 가해준 압력에 따라 어떠한 양상을 보이는지 조사하였다. 맥파의 기본 진동수는 압력에 따른 변화를 거의 보이지 않았으며, 푸리에 진폭은 개인의 체질에 따라 몇 가지 유형으로 분류될 수 있음을 보였다. 이 유형들을 다시 푸리에 진폭이 최고점에 이를 때의 압력의 크기와 최고점에서의 상태를 유지할 수 있는 압력의 범위에 따라 맥상의 여러 형태와 연관지을 수 있음을 보였다. We investigate how the frequency and the Fourier amplitude of the pulse wave behave as the contact pressure of the sensor on the skin increases. The results are that the fundamental frequency of the pulse wave hardly changes and the Fourier amplitude has several different patterns depending on the personal constitution, and its patterns are classified. We also show that the classified patterns can be related to the different pulse types by the magnitude of the pressure required to reach the maximum Fourier amplitude and the range of the pressure at which the maximum Fourier amplitude is maintained.

알긴산 분해능을 갖는 Pseudoalteromonas 및 Vibrio 속 해양세균들의 분리 및 특성분석

윤영준,김정완,Yoon, Young-Jun,Kim, Jung-Wan 한국미생물학회 2015 미생물학회지 Vol.51 No.4

알긴산의 응용을 위하여 인천지역에서 수집한 다양한 패류와 해수로부터 알긴산 분해효소 활성이 우수한 103개의 균주를 분리하고 그 중 M1-2-1, M6-1, C8-15 등 분해능이 가장 우수한 3균주를 선발하여 그 특성을 분석하였다. 이들은 모두 그람 음성 간균이었고, 운동성이 있는 호염성 세균이었다. 또한 생리 생화학적 특성 분석과 16S rRNA 유전자의 염기서열 분석으로 M1-2-1과 M6-1은 Pseudoalteromonas 속, C8-15은 Vibrio 속에 속하는 세균으로 동정되었다. 이들의 알긴산 분해효소 활성은 알긴산이 유일한 탄소원인 APY 배지에 접종하여 $25^{\circ}C$에서 6-8시간 배양했을 때 최대로 나타났고, NaCl을 가했을 때 생장 및 효소 활성 모두 증진되었다. 이 분리 균주들의 알긴산 분해 조효소들은 $45^{\circ}C$와 pH 7.0-8.0에서 가장 높은 활성을 나타냈으며, Pseudoalteromonas sp. M1-2-1과 M6-1 균주는 각각 2.7232 g/L와 1.976 g/L의 환원당 생성능을 보여, 산업적으로 활용 가능성이 높은 것으로 사료되었다. As an effort to utilize alginate, 103 bacterial isolates that were positive for the alginate lyase activity were isolated from various clams and seawater samples collected in Incheon coastal area. Among them, 3 strains (M1-2-1, M6-1, and C8-15) were finally selected for further analysis based on their activities at higher levels than others. These isolates were all Gram-negative and rod shaped halophilic bacteria with motility. According to their physiological and biochemical properties as well as DNA sequence of their 16S rRNA genes, M1-2-1 and M6-1 were identified as a member of genus Pseudoalteromonas and C8-15 belonged to genus Vibrio. They exhibited the alginate degrading activity at the maximal level when they were cultured in APY broth for 6-8 h at $25^{\circ}C$. Both their growth and the enzyme activity were greatly enhanced when NaCl was added to the growth medium. The crude alginate lyases from the supernatants of the bacterial cultures showed the highest activity at $45^{\circ}C$ and pH 7.0-8.0. M1-2-1 and M6-1 produced 2.723 and 1.976 g/L of reducing sugar from alginate, respectively, suggesting that they have potential for commercial application.

대학골프선수의 다차원적 완벽주의와 사회적 유대감 및 조직시민행동의 관계

윤영준(Yoon, Young-Jun),양혜연(Yang, Huij-Uan),한광령(Han, Kwang-Leong) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.5

This study aims to examine the relationship of the multi-dimensional perfectionism of college golf players with their social connectedness and organizational citizenship behaviors. Among 400 respondents, 100 respondents were excluded due to either double responding or insincere answering, resulting in 300 valid participants. Coded data were input in and processed by a computer individually for the statistical analysis by SPPSS (Statistical Package for the Social Science) Version 18.0. The results of the analysis are as follows. First, multi-dimensional perfectionism has a statistically significant impact on social connectedness. It means that as the ultraistic perfectionism is strong, social connectedness is tight while self-centered perfectionism is strong, social connectedness is loose. Second, multi-dimensional perfectionism has a statistically significant impact on organizational citizenship behaviors (altruism, sportsmanship, and citizenship). It means that as others and self-oriented perfectionism are strong, altruism is strong. In the same vein, as others-oriented, self-oriented, and social perfectionism are strong, sportsmanship is strong. Also, it turned out that as self-oriented perfectionism is strong, citizenship is strong, Third, it was reveled that social connectedness has a statistically significant impact on organizational citizenship behaviors (altruism, polite behavior, sportsmanship, and conscientious behavior, citizenship). It means that as social non- connectedness is strong, altruism is weak while altruism is strong as social connectedness is strong. In the same vein, as social non-connectedness is strong, sportsmanship is loose while sportsmanship is tight as social connectedness is strong. As for the relationship between social connectedness and conscientious behavior, as social non-connectedness is strong, conscientious behavior is strong. Last, as both social connectedness and non-connectedness are strong, citizenship is strong.

초광대역(UWB) 채널에서의 실내 강의실 환경 내 사람에 의한 상관대역폭 변화에 대한 연구

윤영준(Yoon Young Jun),이정용(Lee Jung Yong),김영훈(Kim Young-Hoon),김성철(Kim Seong-Cheol) 한국통신학회 2015 한국통신학회 학술대회논문집 Vol.2015 No.06

“국가 사이버위기 관리법” 제정시 고려사항에 관한 연구

윤영준(Young-Jun Yoon),이정희(Joung-Hee Lee) 한국디지털포렌식학회 2014 디지털 포렌식 연구 Vol.8 No.1

Associated with the North Korea cyber attacks, Korean government needs to establish National Cyber Crisis Management Act. The current legislation being discussed in Congress ‘National Cyber anti-terrorism Act' and ‘National Cyber Crisis Management Act'. ‘National Cyber Security Administration Regulations' is not the law so, the government couldn't control private sector. Therefore, we need to make a law. Our IT policies and laws were become a model from the developing world. The new ‘National Cyber Crisis Management Act' should reflect the experts' opinions and the public comment. When National Cyber Crisis occurs, I expect minimized the damage and systematic framework through the proposed new National Cyber Crisis Management Act.

다중 노드 네트워크에서 협력 중계와 인공잡음을 이용한 물리계층 보안 향상에 관한 연구

윤영준(Yoon Young-Jun),김진욱(Kim Jinwook),박정훈(Park Jeong Hoon),김성철(Kim Seong-Cheol) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.6

본 논문은 다중 노드 네트워크에서 물리계층 보안 향상을 위해 협력 중계와 인공잡음을 함께 이용하는 방안을 제안한다. 또한, 다중 노드 네트워크의 시스템 모델을 정의하고, 시스템 모델에서의 물리계층 보안 성능의 지표인 보안율 공식을 수립한다. 수립된 보안율 공식을 이용하여 협력중계와 인공잡음을 위한 최적의 전력할당을 도출하고, 이를 제안된 물리계층 방안에 적용한다. 시뮬레이션 결과를 통해 기존 물리계층 보안 방안보다 제안된 방안이 성능을 보다 향상시킬 수 있음을 보여주었다.

인공잡음을 이용한 물리 계층 보안 기법 성능의 향상에 관한 연구

윤영준(Yoon Young Jun),김성철(Kim Seong-Choel) 한국통신학회 2017 한국통신학회 학술대회논문집 Vol.2017 No.6

다중 DF 중계 네트워크에서의 인공잡음을 이용한 물리계층 보안 기법

윤영준(Young-Jun Yoon),김성철(Seong-Choel Kim) 한국통신학회 2020 한국통신학회 학술대회논문집 Vol.2020 No.2